THE COLDEST DEMON GOD
An Unwanted Hero's Ascension
Volume 1 — Summoning & Rejection
Chapter 1 — Renjiro Kurogane
The sound of bamboo cutting through cold morning air echoed across the empty dojo.
TAK!
Renjiro Kurogane held the end of the strike for less than a second before returning the shinai to center. His bare feet remained planted against the polished wooden floor, shoulders loose, breathing steady. Nothing stood before him except open space and his reflection stretching across the long mirror on the opposite wall. He moved again. A measured step carried his body forward, hips turning before his shoulders, wrists following only at the final moment as the shinai descended along a perfectly controlled line.
TAK!
The strike stopped at the height of an imaginary opponent's head. No shout followed. No exaggerated stomp. No flourish for an audience that did not exist. Renjiro withdrew and replayed the movement through the mirror. His expression barely changed, but his grip loosened slightly.
"Too slow."
The digital clock beside the equipment rack showed 5:47 a.m. He had been inside the dojo for nearly forty minutes, repeating variations of the same movements until whatever imperfection he noticed disappeared. Most people would have struggled to identify any difference between the previous strike and the next. Renjiro could. His left wrist had tightened a fraction too early, and the transfer through his right hip had been late. Neither mistake would matter during ordinary practice. Neither would have been obvious to someone watching from outside.
That did not make them correct. He raised the shinai again.
TAK!
Still wrong. Again. His feet moved before the sound of the previous strike had completely faded.
TAK!
Better.
Renjiro changed the angle. Diagonal cut. Recovery. Advance. Retreat. Another strike from a lower line, followed by a controlled rotation that would have carried a real blade across an opponent's exposed side. There was an unusual absence of hesitation in the way he moved. Renjiro did not practice like someone trying to remember where his feet belonged. Each motion had been stripped down until only what mattered remained—distance, timing, angle, structure. Ten repetitions passed. Then twenty. On the twenty-third, his right heel lifted slightly earlier than intended.
Renjiro stopped. Then started from the beginning. By the time the clock reached 5:59, the same sequence had been repeated fifty-seven times. His breathing had deepened and a thin line of sweat traced the side of his face, but there was no visible satisfaction when he finally lowered the shinai. He simply reconstructed the final movement in his head. Hip. Shoulder. Wrist. Distance. Timing. Acceptable.
"Okay."
That was enough. Several bokken rested beside the equipment rack, each maintained with almost excessive care. Renjiro returned the shinai to its proper place, wiped the handle before releasing it, and reached for a towel. His phone vibrated beside his training bag. 6:02 a.m. The alarm barely completed its first tone before his thumb silenced it. Renjiro slung the bag over one shoulder and glanced across the dojo before leaving. The faint scent of old timber, the cold floor beneath his feet, and the quiet before Tokyo fully awakened had become familiar over the years.
There were mornings when he preferred this place to almost anywhere else. No one asked unnecessary questions here. No one expected conversation. And when something was wrong, the problem was usually obvious. He opened the door and stepped into the morning cold. Tokyo was beginning another ordinary day.
✦ ✦ ✦
Renjiro's apartment stood in a quiet residential district far enough from the busiest roads that morning traffic reached the building as a distant murmur rather than constant noise. He unlocked the door.
"Tadaima."
Silence answered. His hand remained on the doorknob for a moment before he stepped inside and closed it behind him. The habit had never disappeared. Years of returning to an empty apartment should have been enough to remove it. Renjiro had never bothered trying. The word came automatically, the same way he still removed his shoes neatly and aligned them beside the entrance. Training bag in its usual place. Keys on the tray. Phone on the counter. Everything had a position. The refrigerator contained exactly what he remembered: eggs, salmon, vegetables, miso, pickled radish, and rice prepared the night before. Renjiro inspected the shelves briefly before closing the door.
"Enough."
Twenty minutes later, breakfast covered the small dining table. Steamed rice. Grilled salmon. Tamagoyaki with a slightly sweet finish. Miso soup with tofu and wakame. Pickled vegetables on the side. Nothing elaborate. Just properly made. Renjiro sat.
"Itadakimasu."
The television remained dark while he ate. His phone stayed facedown on the kitchen counter. The apartment held little sound beyond chopsticks against ceramic, the soft hum of the air conditioner, and an occasional vehicle passing several floors below. He preferred meals like this. Food deserved attention when someone had taken the time to make it properly. Even if that someone was him. Once finished, Renjiro carried every dish to the sink and washed them immediately. Leaving dirty plates until later served no useful purpose, and he had never understood why people voluntarily created more work for themselves.
His bedroom was equally unremarkable at first glance. A neatly made bed occupied one side. A large desk held two monitors and a custom-built computer. Books filled several shelves along the wall—technical manuals, history texts, novels and reference material. The wardrobe contained little beyond dark clothing. Nothing unusual for a quiet student who lived alone. Renjiro approached one bookshelf and removed a thick hardcover novel. A faint mechanical click answered. Part of the shelving slid sideways.
Behind it was enough evidence to destroy almost every assumption his classmates had ever made about him. Manga occupied several carefully organized rows. Light novels stood beside imported manhwa and manhua volumes. Collector's-edition games remained sealed inside protective cases. Anime Blu-rays, figures, art books, model kits, limited-edition boxes and several generations of consoles filled the concealed space without a centimeter wasted. Renjiro's expression changed. Not dramatically. But unmistakably.
A package delivered the previous afternoon rested on one shelf. He removed the protective wrapping and inspected the manga volume inside, checking the cover, spine and corners before turning it beneath the light. No dents. No printing damage. The obi was intact.
"Good."
There was considerably more satisfaction in that one word than there had been after fifty-seven corrected sword strikes. Renjiro slid the volume into its proper place, adjusted it until the spines aligned exactly, then activated the mechanism again. The shelf closed. The quiet student bedroom returned. Nothing suspicious here. Renjiro checked the time. 6:51. He showered, dressed, and left shortly afterward in the same school uniform as everyone else. The blazer was intentionally loose, and the rest of his clothing concealed far more of his build than fitted fabric would have.
At one hundred ninety centimeters, making himself genuinely small was impossible. Making himself less noticeable was not. His shoulders remained relaxed rather than squared. Movements slower than necessary. No direct stare unless someone addressed him. His dark hair was left naturally untidy enough to soften the sharper lines of his face. None of those details meant much individually. Together, they worked. The Renjiro Kurogane who closed the apartment door looked considerably more ordinary than the one who had moved through the dojo less than an hour earlier.
That was intentional.
✦ ✦ ✦
Tokyo had fully awakened by the time Renjiro reached the station. Streams of people moved beneath electronic signs and platform announcements: salarymen carrying briefcases, students in different uniforms, office workers holding convenience-store coffee, parents guiding sleepy children through the crowd. Renjiro entered the flow without difficulty. Black earphones rested in his ears. Nothing was playing. They reduced the probability of someone attempting casual conversation, which made them useful regardless.
The train arrived close enough to schedule that Renjiro did not bother checking the time. He boarded and eventually took a seat near the doors while buildings slid past the window. Two middle-school boys nearby were discussing a game.
"I swear, the third boss is impossible."
"Your build sucks."
"My build is fine."
"You put everything into damage."
"That's what damage is for."
"You have no stamina."
"I don't need stamina if the boss dies first."
Renjiro looked toward the window. He had completed the game two weeks ago. The third boss was not particularly difficult. The second boy was closer to the real problem, although the first one's build could still work. More likely his dodge timing was terrible and he was compensating by blaming his stats. Renjiro said nothing. The train slowed at the next station. Several passengers stepped off while more entered, including an elderly woman carrying two bags and moving carefully through the crowd.
Before she reached his row, Renjiro stood. The woman noticed the empty seat. Then him.
"Oh… thank you."
"You're welcome."
He returned to the space beside the doors and took hold of an overhead strap. No further conversation followed. Good. Helping someone did not require turning it into an event. The train continued toward school.
✦ ✦ ✦
Class 3-B could be heard before Renjiro reached the doorway.
"Oi, Junpei! Give it back!"
"I borrowed it!"
"You opened it!"
"That doesn't change ownership!"
"It changes whether it's technically unused!"
"That isn't how anything works!"
Renjiro entered just as Okada Junpei darted between two desks with a sports drink in one hand and Kurosawa Mika close behind him. Junpei saw the doorway. Mika did not. She grabbed a pencil case from the nearest desk and threw it.
"Stop running!"
Junpei ducked. The pencil case continued directly toward Renjiro's face. His hand moved.
PAK!
The case stopped in his palm. The classroom did not become silent, but the students close enough to see it paused. Mika froze. Renjiro glanced at the pencil case, then at her.
"Kurosawa-san."
"Oh."
She walked over. He handed it back.
"Sorry, Kurogane."
"It didn't hit me."
"Yeah. Because you caught it."
"Correct."
Mika blinked once. Junpei used the distraction to retreat farther away. She noticed.
"You."
He raised the sports drink like a hostage negotiator offering terms.
"Mika, we can resolve this peacefully."
"You already drank from it!"
"Only once."
"I watched you take three sips!"
"That feels exaggerated."
Renjiro walked away before negotiations deteriorated further. His desk sat near the windows. Bag down. Book out. Mechanical pencil beside it. Routine. At the front of the room, Kanzaki Daiki stood surrounded by several classmates discussing afternoon athletics practice. He had the kind of presence Renjiro rarely bothered cultivating—athletic, confident, naturally social, and comfortable enough with attention that people gathered around him without invitation. Akiyama Ryusei was complaining about the weather.
"If it rains again, I'm not running outside."
Daiki laughed. "You said that last week because you lost."
"That track was wet."
"It was dry."
"It rained the day before."
"Ryusei, everyone ran on the same track."
"Exactly. Unfair to all of us."
The group laughed. Renjiro opened his book.
"Kurogane-kun."
He raised his eyes. Tachibana Akari stood beside the desk carrying several sheets of paper. Her composed expression was the same one she usually wore whenever helping with classroom work.
"Morning."
"Morning."
"Could you pass these behind you?"
Renjiro accepted the stack.
"Sure."
"Thank you."
Akari moved on. He removed one sheet and passed the rest to the student behind him. A normal exchange. He preferred those.
"Kurogane-kun."
Another voice. Renjiro turned slightly. Shirakawa Reina had stopped beside his desk. Unlike Junpei and Mika, Reina rarely produced unnecessary noise. Her uniform was neat, her long hair arranged as carefully as usual, and a book rested against one arm. Her attention, however, was on his right hand.
"The pencil case."
"What about it?"
"You caught it without looking."
"I looked eventually."
Her eyes rose to his.
"Eventually."
"Yes."
A hint of amusement appeared.
"Your reflexes are good."
"Lucky."
"That didn't look lucky."
"It didn't hit me. Good enough."
Reina regarded him for another moment. Renjiro gave her two seconds.
"Anything else, Shirakawa-san?"
"No."
She remained there anyway. Three seconds. Then she returned to her seat. Renjiro watched only long enough to confirm that the conversation was actually over before returning to his book. Strange. Not important. At least not enough to waste time thinking about.
✦ ✦ ✦
"Everyone, take your seats."
Takahashi Shizuka's voice crossed the classroom from the doorway. The effect was immediate. Not complete silence—Class 3-B appeared incapable of that before first period—but enough for students to move toward their desks. Junpei was still standing. Shizuka noticed.
"Junpei-kun."
He sat.
"I'm sitting, Sensei."
"I can see that."
Several students laughed. Shizuka entered carrying a file and placed it on the teacher's desk. At twenty-seven, she was young enough that students unfamiliar with her occasionally mistook her for someone closer to university age. They rarely maintained that assumption for long.
"And Kurosawa-san."
Mika, who had finally recovered her drink, straightened.
"Yes, Sensei?"
"Have we finished trying to kill each other?"
"I wasn't trying to kill him."
Junpei raised one hand.
"I disagree."
"You stole my drink."
"Borrowed."
"You drank it!"
Shizuka lifted one finger. The argument stopped.
"Good. I would prefer not to begin homeroom with a criminal investigation."
A wave of laughter crossed the classroom. Mika sat. Junpei looked far too pleased with himself for someone who had nearly been hit with stationery ten minutes earlier. Shizuka opened the attendance file. Names followed.
"Kurosawa Mika."
"Present."
"Okada Junpei."
"Alive."
"Present would be better."
"Present."
A few names later—
"Kurogane Renjiro-kun."
"Present."
Shizuka looked up briefly. Renjiro occupied the same seat he always did near the window, his book already closed now that homeroom had begun. His uniform was neat. His expression revealed nothing. Quiet. Reliable. Ordinary enough that she rarely needed to correct him. Shizuka marked the page. Attendance continued. When she closed the file several minutes later, however, her attention returned to his desk.
"Kurogane-kun."
Renjiro looked up.
"Yes, Sensei?"
"Do you have time after school?"
The reaction around him was immediate and irritatingly predictable. Several heads turned. Junpei looked over his shoulder with an expression that asked an entire question without speaking.
What did you do?
Renjiro stared back. Nothing. Junpei shrugged. Renjiro returned his attention to Shizuka.
"Yes."
"Come to the staff room before you leave."
"Alright."
Shizuka continued with announcements. Whispers began almost immediately. Renjiro ignored them. He already had a reasonable guess about what she wanted. The post-graduation form sitting almost entirely blank inside his bag was difficult to forget.
✦ ✦ ✦
Renjiro rarely ate lunch in the classroom. The rooftop would have been better, but the school kept it locked outside specific activities. Instead, he used a narrow stairwell beside an upper-floor storage room. Few students had any reason to pass through, and a broad window filled the landing with enough daylight that it never felt completely enclosed. Quiet. That was sufficient. Renjiro sat on the third step and opened his lunchbox. Rice. Karaage. Vegetables. Tamagoyaki. All prepared before school.
He had barely begun eating when footsteps rose from the lower floor. Two people. Different weight distribution. One walked normally. The other dragged his left foot slightly when changing levels. Voices followed.
"…I told you not to tell him."
"How was I supposed to know he'd come early?"
"What do we do now?"
"Act normal."
Renjiro continued eating. Two boys from another class appeared around the turn. They stopped. Renjiro looked at them. They looked at him. The taller one frowned.
"Who are you?"
"Class 3-B."
"What are you doing here?"
Renjiro glanced at the lunchbox in his hands.
"Eating."
The boy stared. There was no sarcasm in the answer. That somehow made it worse. His friend tugged his sleeve.
"Forget it. Come on."
They disappeared downstairs. Renjiro resumed lunch. Whatever they had been discussing had nothing to do with him. A few minutes later, another set of footsteps approached. One person this time. Lighter than the previous pair. Consistent pace. No hesitation at the second-floor landing. Renjiro recognized the rhythm before she appeared. Reina. She reached the turn and stopped when she saw him. For a moment neither spoke. Reina carried convenience-store bread and a carton of juice. Her gaze moved from Renjiro to the broad window and then toward the empty stairs.
"You always eat here?"
"Sometimes."
"Alone?"
"Usually."
Reina nodded as if the answer confirmed something. She walked toward the window rather than toward him and opened the carton. The distance she chose was deliberate enough to avoid invading his space without making a performance of staying away. Renjiro returned to lunch. Several quiet seconds passed.
"That looks good."
He finished chewing.
"Thanks."
"You bought it?"
"Made it."
Reina turned.
"You cook?"
"Yes."
"Every day?"
"Almost."
Her attention returned to the lunchbox.
"You don't look like someone who cooks."
Renjiro raised an eyebrow.
"What does someone who cooks look like?"
Reina paused.
"Fair."
He continued eating. The stairwell became quiet again. Oddly, it wasn't uncomfortable. Reina broke the silence first.
"You're not going to ask why I'm here?"
"No."
"Why not?"
"You wanted somewhere quiet."
Her gaze sharpened slightly.
"You sound very certain."
"If you were looking for someone, you would've checked the classrooms or hallway first. You didn't. You came directly upstairs."
Reina glanced toward the window. Then back at him.
"You noticed that?"
"Yes."
"From here?"
"You weren't quiet."
"I thought I was."
"You were quieter than the two idiots who came before you."
A short pause. Reina smiled. Not broadly. Enough that Renjiro noticed.
"Idiots?"
"They were discussing something they didn't want anyone to hear while walking through a stairwell."
"Maybe they didn't expect anyone here."
"That explains the mistake. It doesn't make it less stupid."
There was no mockery in his tone. No attempt to make the line sharper than it needed to be. It was simply his conclusion. Reina studied him for another moment.
"You really just say what you think."
"When there's a reason to answer."
"Is there usually not?"
"No."
She gave a small hum. Renjiro finished the last piece of tamagoyaki and closed the lunchbox. Reina remained beside the window.
"Shirakawa-san."
"Hmm?"
"If you're waiting for permission to sit, you don't need it. I don't own the stairs."
That faint smile returned. Reina came over and sat two steps below him. She did not move closer. Renjiro did not move away. For the remainder of lunch, neither tried to force conversation. Strangely enough, Renjiro did not find her presence irritating. That was unusual enough to notice. He left it at that.
✦ ✦ ✦
After school, Renjiro knocked on the staff-room door.
"Come in."
Several teachers remained at their desks, organizing papers or preparing lessons for the following day. Shizuka sat near the far side of the room with the exact document Renjiro had expected waiting in front of her.
"Kurogane-kun. Over here."
He approached.
"Sit."
Renjiro took the chair beside her desk. Shizuka pushed the paper toward him. His post-graduation planning form. Name: complete. Class: complete. Almost everything else: blank. Shizuka tapped the page with her pen.
"This."
Renjiro looked at it.
"Yes."
"Don't 'yes' me."
"What exactly is wrong?"
Her eyes narrowed.
"You know exactly what's wrong."
"I assume you're referring to the empty sections."
"Your powers of deduction are incredible."
"Thank you."
"That was sarcasm."
"I know."
Shizuka stared at him. Renjiro waited. She exhaled through her nose.
"Kurogane-kun, this is due next week."
"I remember."
"University?"
"Possible."
"Employment?"
"Also possible."
"Technical school?"
"Possible."
"That isn't a plan."
"No."
Shizuka placed the pen down.
"Then why is everything blank?"
Renjiro considered the form for a few seconds.
"There isn't anything I want enough to choose yet."
Shizuka became quieter. He was not failing academically. That would have made the conversation simpler. Renjiro's grades gave him options. More than enough. He completed assignments, rarely missed school, and had no significant disciplinary history. Indecision did not fit the obvious explanations.
"Your grades are good enough for plenty of universities."
"I know."
"And you could probably find work if that's what you prefer."
"Yes."
"Then what do you actually enjoy?"
That question required more thought. Kendo. Cooking. Programming. Engineering. Games. Anime. Manga. History. Weapons. Martial arts. Languages. Building things. Breaking systems apart just to understand how they worked. Too many answers. None of them felt like a future.
"A few things."
Shizuka waited. Renjiro realized she expected an example.
"Cooking."
Her eyebrows rose.
"You cook?"
"Every day."
"I didn't know that."
"You never asked."
"That's exactly the problem."
Renjiro looked at her.
"What problem?"
"You never tell anyone anything."
"There usually isn't a reason."
"People don't need a formal reason to talk about themselves."
"I do."
The answer came without hesitation. Shizuka fell silent. Renjiro did not look away. He wasn't trying to make a point. It was simply true. She picked up the form again.
"Fine. I'm not asking you to decide your entire life this afternoon. But think about it properly instead of leaving everything blank because every option is technically possible."
"I'll think about it."
"Actually think."
"Yes, Sensei."
Shizuka nodded, but she did not dismiss him. Renjiro noticed.
"And?"
She hesitated.
"Are you alright living alone?"
His fingers stopped against the edge of the paper. Only briefly.
"I'm fine."
"Kurogane-kun."
"I am."
"You're eighteen."
"Correct."
"That doesn't automatically make everything easy."
"I didn't say it did."
The calm answer took some momentum from her concern. Shizuka folded her hands.
"If something happens—money, health, school, anything—you can tell me."
Renjiro studied her expression. There was no performance in it. No polite teacher's concern spoken because the job required it. She meant it. That mattered.
"I'm capable of handling most problems."
"Most."
"Yes."
"And the rest?"
"I'll deal with them when they happen."
"Alone?"
"If necessary."
Shizuka frowned. Renjiro understood why. He also had no intention of changing the answer simply because she disliked it.
"Sensei."
"What?"
"I know you're trying to help."
Her expression softened slightly.
"I appreciate it."
That was as much as he could honestly give. Shizuka seemed to understand.
"Alright."
She returned the form.
"Next week."
"I remember."
"And don't return this with three lines filled in."
"I'll add at least four."
"Kurogane-kun."
The faintest movement touched the corner of his mouth. Shizuka caught it.
"Was that a joke?"
"No."
"It was."
"Can I go?"
She sighed.
"Go."
Renjiro stood.
"Thank you, Sensei."
"Be careful going home."
He nodded and walked toward the door.
"Kurogane-kun."
Renjiro glanced back. Shizuka pointed at the form one final time.
"Next week."
"I remember."
"Good."
Renjiro left.
✦ ✦ ✦
The evening sky over Tokyo had turned orange by the time Renjiro walked out of school. He did not head directly home. A bookstore occupied the first floor of a commercial building two stations away, and a release he had been waiting for should have arrived that morning. The bell above the entrance chimed when he stepped inside.
"Welcome."
Renjiro went directly to the manga section. New releases occupied a display near the center. There. He picked up the volume and checked it automatically. Front cover. Back. Spine. Obi. No bent corners. No scratches. Into the basket. A new light novel from another series followed, then a gaming magazine containing a development interview he had already read portions of online but wanted physically. Renjiro headed toward the register. Stopped. A display near the end of the aisle contained limited-edition merchandise.
One acrylic stand remained. Last in stock. He stared at it for approximately four seconds. Then picked it up. Into the basket. No hesitation. It was the fastest decision he had made regarding his future all day.
✦ ✦ ✦
Night returned the apartment to silence. Dinner came first. Chicken cooked with ginger and soy, rice, vegetables and soup. Renjiro ate, cleaned the kitchen, then moved to his bedroom carrying tea. Tonight's purchases rested neatly on the desk. Two monitors illuminated the room. The left contained a code editor, terminal, system-monitor windows and a virtual machine. An anime episode remained paused on the right. Renjiro typed. A section of code failed. He read the error once. Three seconds. The cursor moved.
One line changed. Run. Success.
"Hmm."
His phone vibrated. Class 3-B group chat.
Junpei: DOES ANYONE HAVE THE ANSWER FOR MATH NO. 7
Mika: Do it yourself.
Junpei: CRUEL.
Ryusei: C
Takumi: B
Junpei: WHICH ONE OF YOU IS LYING
Renjiro opened the attached image. D. He placed the phone down. Three seconds later—
Reina: D.
Takumi: Wait. Yeah. I miscalculated.
Junpei: SHIRAKAWA-SAMA HAS SAVED MY LIFE
Reina: Don't call me that.
Mika: He learned nothing.
Renjiro closed the notification. Junpei would survive mathematics without him. Probably. The anime resumed. A character on-screen attempted a serious speech, only for another character to enter at exactly the wrong moment and ruin everything. A quiet laugh escaped Renjiro. Short. Genuine. No one heard it. At school, Kurogane Renjiro was the quiet student near the window. Polite enough. Average enough. Easy to overlook when no one had a reason to pay attention. Inside this room, that version of him barely existed.
Renjiro could spend hours modifying software simply because an existing system irritated him. He could argue internally over bad adaptation pacing, memorize game systems after a single playthrough, cook meals most people his age would never bother attempting, then wake before dawn to repeat the same sword movement fifty-seven times because his heel had moved incorrectly. He liked many things. He simply saw no reason to advertise them. Renjiro reached for his tea. The left monitor flickered. Once.
His hand stopped before reaching the cup. The image stabilized immediately. Terminal normal. No crash. Network stable. CPU and memory usage unchanged. The display driver reported nothing unusual. Renjiro opened the logs. Nothing. He checked the cable. Secure.
"Driver?"
Diagnostics. Normal. A display glitch was still the simplest explanation. He resumed the anime. Thirty-eight seconds passed. The monitor flickered again. This time, the ceiling light dimmed with it. Renjiro removed his earphones. The room became still. No electrical buzzing. No alarms from neighboring apartments. No voices in the corridor. The light had already returned to normal. Renjiro stood and opened the balcony door. Cool night air entered. Tokyo remained bright beneath him. Apartment windows glowed across neighboring buildings. Traffic continued along the street below. Convenience-store signs remained lit.
No visible district-wide fluctuation. No emergency sirens. Nothing. Renjiro remained there for several seconds before returning inside. The computer still reported normal operation. Rather than speculate without evidence, he opened a text file.
22:17:43 — display flicker.
Another line.
22:18:21 — display flicker + room light fluctuation. External buildings appear unaffected. Cause unknown.
Save.
He read both entries once. There was not enough information to establish anything. Two anomalies were still only two anomalies. If it happened again, he would compare conditions. If it did not, inventing explanations would accomplish nothing. Renjiro closed the file. The anime resumed.
✦ ✦ ✦
Shirakawa Reina's pencil stopped above her mathematics notebook. The answer in front of her was correct. She had already checked it twice. Yet her attention had drifted elsewhere. To that morning. A pencil case crossing Class 3-B. Kurogane's hand moving. Reina leaned back slightly. Catching it was not particularly impressive by itself. Plenty of athletic students could have reacted quickly enough. That wasn't what bothered her. He had not flinched. His shoulders had barely moved. More importantly, his hand had begun moving before his head had completely turned toward the incoming object.
Reina rolled the pencil between her fingers.
Lucky.
That had been his explanation. She didn't believe it. Then there was lunch.
If you were looking for someone, you would've checked the classrooms or hallway first.
He had said it as though the conclusion required no effort. No attempt to impress her. No smug smile afterward. He had simply noticed.
"Kurogane-kun…"
Interesting. That was all. Interesting did not mean important. Reina lowered her pencil and returned to the mathematics problem. For almost a minute, she succeeded.
✦ ✦ ✦
11:48 p.m. Renjiro finished the manga he had bought after school. He closed it and rested his thumb along the spine.
"Good."
A satisfying volume. The pacing had recovered after the previous arc, the final chapter had ended at the correct place, and the adaptation announcement mentioned in the afterword had not yet given him a reason to be concerned. Renjiro placed the book on the bedside table. Lights off. Darkness settled across the room while Tokyo continued beyond the window. He closed his eyes. Several seconds passed. Pale light appeared through his eyelids. Renjiro's eyes opened immediately. His phone screen had turned on by itself.
No vibration. No notification tone. No incoming call. The screen remained illuminated for less than two seconds. Then went black. Renjiro did not move. Five seconds passed. Then ten. Nothing. He reached for the phone. Battery: 71%. No applications open. No notification history. No recorded system event corresponding to the screen activation. His eyes remained on the display. The earlier monitor flicker could have been hardware. The light fluctuation could have been electrical. This was separate equipment.
Different power source. Different system. Same night. Renjiro sat up. He opened the note from earlier. A third line appeared beneath the first two.
23:48:12 — phone display activated without notification or recorded system event.
He saved the file. For several seconds, the screen's light reflected faintly across his face. Three incidents were not proof of anything. But they were no longer worth dismissing. Renjiro placed the phone on the bedside table, this time close enough to reach without sitting up. Then he lay back down. Outside, Tokyo continued exactly as before. Cars crossed the roads below. Apartment lights disappeared one by one. Somewhere beyond the buildings, the final trains carried passengers toward home. Nothing appeared wrong.
Nothing sounded wrong. And yet, on Renjiro's desk, a file now contained three timestamps that should not have existed. He closed his eyes. Tomorrow, if it happened again, he would find the cause. The room remained dark. For tonight.
End of Chapter 1