THE COLDEST DEMON GOD
An Unwanted Hero's Ascension
Volume 1 — Summoning & Rejection
Chapter 5 — Between Worlds
There was no visible floor.
That was the first thing Renjiro Kurogane understood when sensation returned to his body. The violent sense of falling had ended, yet nothing appeared beneath his shoes. There was no tile, concrete, carpet, soil or any surface his mind could use to explain why he was standing instead of continuing downward. An endless expanse of white stretched beneath him and outward in every direction, featureless enough that distance itself became difficult to judge.
And yet his weight was supported.
Renjiro remained still.
Around him, the silence lasted less than a second.
"What the hell?!"
"Where are we?!"
"Sensei!"
"Akari!"
"Everyone, calm down!"
"Calm down?! How are we supposed to calm down?!"
Voices overlapped rapidly as panic spread through Class 3-B. Renjiro ignored the noise long enough to count everyone around him: thirty students and one teacher. Everyone who had been inside the classroom was present.
No obvious blood. No burns. No missing limbs. Several students had fallen to their knees, while others clung to whoever happened to be closest, but none appeared visibly injured by whatever had taken them from Tokyo.
Takahashi Shizuka stood near the centre of the group. Some colour had drained from her face, yet her voice remained firm enough to cut through the panic.
"Everyone, stay together! Don't wander away from the group!"
Nobody needed much convincing. There was nowhere obvious to wander.
The classroom was gone. So were the desks, the windows, the walls, the ceiling and every trace of Tokyo beyond them. In their place existed only white space without a visible horizon or identifiable source of light. There was enough illumination to see clearly, but nothing seemed to produce it, and almost no meaningful shadows formed beneath anyone's feet.
Renjiro lifted one hand and flexed his fingers. Normal movement. Vision remained clear. Breathing was normal. His pulse was elevated, but considering the circumstances, that was expected rather than useful.
He looked down again. His school shoes appeared to rest on empty space.
Renjiro shifted his centre of gravity forward by a fraction. Resistance responded beneath him.
Interesting.
There was a surface. It simply could not be seen.
He crouched.
"Kurogane-kun?"
Shizuka's voice reached him from several metres away.
Renjiro touched the apparent emptiness beneath his feet with two fingers. They stopped against something perfectly solid: smooth, without detectable texture or any noticeable temperature difference. He applied more pressure, but the invisible surface did not bend, depress or allow his fingers to pass through.
Renjiro stood.
"What are you doing?"
Shirakawa Reina had approached from his left. She kept several metres between them, but her attention was fixed on the point where his hand had touched empty space.
"Checking the floor."
Her gaze dropped.
"There isn't one."
"There is."
Reina frowned.
Renjiro tapped the sole of his shoe against it.
TOK.
A faint sound answered.
Her expression changed. She crouched and extended one hand cautiously. Her fingertips stopped several centimetres below the visible level of Renjiro's shoes. Nothing appeared beneath them, but the resistance was real.
"...You're right."
"Apparently."
Reina straightened.
"You don't seem surprised."
"I am."
"You don't look surprised."
Renjiro glanced at her.
"Those aren't the same thing."
For a moment, Reina had no response.
Behind them, Junpei shouted.
"MY PHONE!"
Several heads turned. Okada Junpei stood with his smartphone in one hand, repeatedly pressing the power button.
"Come on..."
He held it higher as though elevation might somehow help.
"Anyone getting a signal?"
Mika stared at him.
"Signal?"
"Yes, Mika. Signal."
She swept one hand toward the endless white space.
"Look around!"
"I am looking around!"
"And your first concern is your phone?!"
"I didn't say Wi-Fi."
"You were thinking it."
Junpei opened his mouth, paused, then admitted, "...Maybe."
"Idiot."
Under ordinary circumstances, half the class would probably have laughed. Nobody did. The humour had failed because the fear underneath Junpei's voice was too obvious.
Renjiro reached into his own pocket. His phone was still there.
He pressed the power button. Nothing. He held it longer. No battery warning appeared, no startup logo, no vibration. The device was completely unresponsive despite having been well above half capacity before the classroom disappeared.
Renjiro stored the information. Over the previous several days, they had experienced synchronized electromagnetic disturbances, electrical failures without matching voltage loss, interrupted electronics, missing time, and finally the phenomenon that had swallowed Class 3-B. Now every phone around him appeared dead.
A conventional explanation had not become impossible. But its probability had collapsed significantly.
Renjiro returned the phone to his pocket. No conclusion yet. Not until there was something worth concluding.
✦ ✦ ✦
"Everyone!"
Kanzaki Daiki's voice carried across the white space. He had moved beside Shizuka, placing himself where most of the class could see him.
"Listen to Sensei. Nobody separate from the group."
A few students moved closer almost immediately.
Renjiro watched without comment. Daiki had always been good at that. He knew how to speak loudly without sounding hysterical, how to take a central position without making it obvious that he had taken one, and how to give uncertain people something that resembled direction.
Usually useful. At the moment, however, nobody actually controlled anything.
"Kanzaki-kun," Shizuka said. "Help me check everyone."
"Got it."
They started moving through the class. Renjiro had already completed the basic count: thirty students, one teacher, no visible physical trauma.
That absence mattered. Whatever had transported them had displaced thirty-one human beings without leaving the kind of damage an uncontrolled physical event should have produced. Or perhaps it had and the damage simply was not visible.
Renjiro stopped the thought there. Convenient assumptions were still assumptions.
"Kurogane-kun."
Shizuka had reached him.
"Yes, Sensei?"
"Are you hurt?"
"No."
"Dizzy?"
"No."
"Nauseous?"
"No."
"Anything strange?"
Renjiro looked around at the endless white environment.
"Other than this?"
Shizuka stared at him. He waited.
A tired breath left her.
"...Yes. Other than this."
"No."
"Good."
She turned toward Reina.
"Shirakawa-san?"
"I'm alright, Sensei."
Shizuka nodded and moved to the next student.
Renjiro watched her for another moment. Her posture was controlled, but her breathing was too fast. Fear. Understandable. Yet she continued checking every student individually instead of remaining in one place and waiting for someone else to do it.
Teacher first. Fear second. Consistent.
Renjiro turned away. The environment was still unexplored.
He began walking.
Three steps. Five. Seven.
"Kurogane."
Mika's voice stopped him. She pointed toward the empty distance.
"Where are you going?"
"Nowhere."
"You're literally walking away."
"Testing something."
"What?"
"Distance."
Mika stared at him.
Renjiro continued. Ten metres. Fifteen. Twenty.
He stopped.
Something was wrong—not with the physical movement, but with what he saw. Junpei still appeared roughly the same size. So did Shizuka, Daiki and everyone else. They should have become visibly smaller as the distance increased, yet they had not.
Renjiro walked another ten metres. The visual relationship barely changed. When he turned and walked back, the number of steps required matched the physical distance he had travelled.
The distance itself existed. Perspective did not represent it correctly.
Renjiro stopped near his original position.
"Found something?"
Reina had remained nearby.
"Maybe."
"What?"
"Distance behaves normally."
She frowned.
"But?"
"Perspective doesn't."
Reina looked toward the group, then stepped backward herself. Five metres. Ten. Her expression shifted.
"They're not getting smaller."
"No."
She returned.
"What does that mean?"
"I don't know."
"You have a theory."
"Several."
"And?"
"None with enough evidence."
Reina watched him for a few seconds. Then her expression sharpened.
"Your sensors."
Renjiro looked at her.
"What about them?"
"The lights. The electromagnetic spikes. The clocks."
Her voice lowered.
"What happened at my house. At Junpei's. At school."
She looked around.
"You think this is connected."
"I think dismissing the possibility would be stupid."
"So you do."
"I said it's possible."
Reina's lips tightened slightly.
"You really don't like committing to conclusions."
"Wrong conclusions waste time."
Before she could answer, something changed.
Not visually.
Renjiro felt it first: a faint pressure passing across his skin, almost nothing. Years of martial training had conditioned him to notice changes in distance, movement and presence before he consciously identified what caused them, and his centre of gravity lowered slightly.
Reina noticed.
"What?"
Renjiro raised one hand.
"Quiet."
Her expression sharpened.
Then a sound travelled through the white space.
Chime.
Soft. Clear. Impossible to locate.
Conversation died. Junpei lowered his phone. Mika stopped speaking. Daiki turned. Shizuka moved closer to the students nearest her.
The sound came again.
Chime.
A point of golden light appeared somewhere ahead—or at least Renjiro assumed it was ahead. In a place where perspective no longer behaved normally, distance had become a questionable concept.
The golden point expanded. It produced no obvious heat and no wind, yet the white environment reacted around it.
Thin golden structures unfolded through the emptiness. Lines crossed lines. Circles formed within larger circles. Symbols emerged between them in repeating sequences, some resembling mathematical notation and others unlike any writing system Renjiro had encountered.
Thousands of components assembled into one enormous geometric network.
Renjiro's attention narrowed immediately.
Finally. Information.
He tracked repetition, symmetry, rotation, layer order, which structures appeared first and which responded afterward. The symbols were not random. That much was obvious.
Then the golden light gathered around a figure.
A woman appeared.
The entire class became silent.
Long silver-white hair drifted behind her despite the complete absence of wind. Her clothing was unfamiliar—white and gold, elegant without looking ceremonial in any Earth tradition Renjiro recognized.
She was beautiful. That fact required no analysis.
It also was not the interesting part.
The interesting part was the environment. Something about the white space seemed different around her. The impossible emptiness did not appear to support her in the same uncertain way it supported the class.
For an instant, Renjiro had the irrational impression that the space existed around her rather than the other way around.
He discarded the thought. Too speculative. Observe first.
The woman opened her eyes. Golden irises looked across the group.
Actual gold. Not amber. Not yellow.
For a moment, something changed in her expression. Concern. Relief. Perhaps both.
Then she spoke.
"I am sorry."
Nobody answered.
Of all possible openings, that had not been one Renjiro expected.
The woman continued.
"You were not meant to be here."
Mika recovered first.
"Where the hell is here?"
"Mika," Shizuka warned.
"What? We're standing in some white nowhere, Sensei!"
"You're not floating," Renjiro said.
Mika snapped toward him.
"This is seriously not the time, Kurogane!"
"There is a floor."
"I KNOW THAT NOW!"
A strangled noise came from Junpei.
Mika turned.
"Don't."
"I didn't say anything."
"You were going to."
"I value my life."
The silver-haired woman watched the exchange. For the briefest moment, the weight in her expression softened, then returned.
"This place is called the Divine Intermediate Space."
Silence settled again.
Renjiro stored the term exactly as given. Divine. Intermediate. Space. Each word carried implications. None had been proven.
Daiki stepped slightly forward.
"Who are you?"
The woman's gaze moved to him.
"My name is Chronies."
A pause followed.
"I am one of the divine beings responsible for maintaining portions of the laws governing the world toward which you are being drawn."
Junpei slowly raised a hand. Every nearby student looked at him. He lowered it halfway.
"...Can I ask something?"
Chronies nodded.
"Yes."
"Are you saying you're a goddess?"
Mika covered her face with one hand.
Chronies did not seem offended.
"In terminology familiar to your civilization, yes."
Junpei's hand dropped.
"Oh."
He swallowed.
"Okay."
Mika turned on him.
"That's all you have?!"
"What am I supposed to say?!"
"I don't know!"
"Exactly!"
Renjiro ignored them. His attention remained on Chronies.
Goddess. Under normal circumstances, the claim would have been absurd without extraordinary evidence. The circumstances had stopped being normal.
Thirty-one people had disappeared from Tokyo. They stood on an invisible surface inside an environment with impossible perspective. Electronics no longer worked. Golden structures had appeared without a visible projection mechanism, followed by a woman who claimed responsibility over laws governing another world.
That did not prove she was a Goddess. It made the claim worth evaluating rather than dismissing. A significant difference.
Shizuka stepped forward.
"You said we weren't meant to be here."
Chronies looked at her.
"Yes."
"Then send us back."
Direct. Exactly what Renjiro expected.
Shizuka did not soften the request.
"These are students. They're my responsibility. Whatever happened and whatever this place is, they have families waiting for them in Japan."
Her hands tightened at her sides.
"Please return us to Earth."
Chronies did not answer immediately.
The silence was enough.
Several students understood before she spoke. Akari's face lost colour.
"Sensei..."
Shizuka's expression hardened.
"You can send us back, can't you?"
Chronies lowered her eyes.
"I cannot."
The reaction exploded.
"What?!"
"No way!"
"My parents—"
"What does that mean?!"
"You're a Goddess!"
"Why can't you?!"
Shizuka raised her voice.
"Everyone!"
It barely helped. Even Daiki joined her, trying to calm several students at once.
Renjiro remained still. His pulse accelerated—not panic, not entirely.
Japan. The word suddenly carried more weight than it had ten minutes ago.
His apartment. The dojo. His computer. His books. Games. Manga. The curry sitting unfinished in his refrigerator. The hidden shelf no classmate knew existed. The career form that remained almost completely blank on his school desk.
Ordinary things. He had spent years treating them as permanent because there had never been a reason not to. Now they existed on the other side of something he could not even define.
Renjiro's expression did not change. Feeling something did not make it useful to display. Information was still the better priority.
Chronies waited several moments before speaking again.
"Please."
Her voice was not particularly loud. Everyone heard it anyway.
The panic gradually weakened.
"I will explain what I can."
Renjiro caught the wording immediately.
What I can. Not everything. Important.
✦ ✦ ✦
"You are currently between two worlds."
Chronies raised one hand.
The white space changed.
A sphere emerged beside her: blue oceans, continents, cloud systems.
Earth.
Several students gasped.
Junpei whispered, "No way..."
A second sphere appeared opposite the first. Different continents. Different oceans. Two visible moons. A faint luminous structure surrounded part of the planet like a distant ring or atmospheric phenomenon.
Chronies indicated Earth first.
"This is the world from which you came."
Her hand moved toward the second.
"And this is Asteria."
Renjiro studied it. Asteria. Name confirmed. Unknown geography, scale, political boundaries—unknown almost everything else.
"You are being summoned there," Chronies continued.
Shizuka's face hardened further.
"By whom?"
Chronies paused.
"A human empire."
Renjiro noticed the choice immediately. Not my followers. Not by divine instruction. A human empire.
"Why?" Daiki asked.
"They seek Heroes."
The word changed the atmosphere. Fear did not disappear, but recognition entered beside it.
Junpei stared at Asteria. Sayaka adjusted her glasses. Ryusei's eyes moved between Chronies and the unfamiliar world. Even Daiki's posture shifted slightly.
Renjiro understood why. Hero. Isekai. Summoning. Fantasy world. Fiction had given the concepts names. That did not mean fiction had given them rules.
Junpei eventually voiced what several others were clearly thinking.
"So..."
He swallowed.
"This is an isekai?"
PAK!
Mika slapped the back of his head.
"Ow!"
"Read the room!"
"I'm asking what everyone is thinking!"
"Not everyone!"
Sayaka quietly raised one hand.
"I was thinking it."
Mika looked at her.
Sayaka adjusted her glasses again.
"...Sorry."
A few nervous laughs escaped. Fragile. Brief. But real.
Chronies appeared unfamiliar with the term.
Renjiro approved of that. A supposed Goddess conveniently knowing Japanese entertainment slang would have created more questions than answers.
Daiki looked back at Asteria.
"If that empire summoned us because it needs Heroes, does that mean their world is in danger?"
Chronies' golden eyes settled on him.
"Asteria contains many dangers."
Daiki frowned.
"That wasn't what I asked."
Renjiro glanced at him. Better.
Chronies took a moment before answering.
"The empire responsible for the summoning believes Heroes from another world can give it power it does not currently possess."
Renjiro's attention sharpened. Careful wording again.
Daiki noticed this one too.
"So there is an enemy?"
"There are nations, races, monsters and conflicts throughout Asteria."
Junpei raised his hand again.
"Is there a Demon King?"
Mika slowly lifted one fist.
Junpei shifted away from her.
"What? That's a legitimate question!"
Chronies regarded him calmly.
"There are Demon Kings."
Junpei stopped moving.
Plural.
Renjiro stored it.
Chronies continued.
"There are also Human kings, Beastkin rulers, Elven authorities, Dwarven states, Dragon territories, magical federations, churches, independent cities and powers that cannot be categorized easily."
The simple Hero-versus-Demon-King picture visibly forming in some students' minds cracked.
Good. Reality rarely organized itself for convenience.
"You are not being brought into a simple conflict," Chronies said.
Shizuka responded immediately.
"Then why were my students summoned at all?"
Chronies looked directly at her.
"I did not summon you."
Silence.
Renjiro's attention sharpened.
There. One of the most useful answers so far.
"The force pulling you from Earth originated from Asteria."
"From that empire?" Reina asked.
"Yes."
Reina's expression cooled.
"So you intercepted us."
Chronies became still for half a second. Then nodded.
"Yes."
Renjiro glanced toward Reina. Fast. She had followed the structure cleanly.
They were being pulled from Earth toward Asteria. They had instead arrived inside a space Chronies controlled. Interception was the obvious bridge between those facts.
Renjiro looked back at the Goddess.
"What would've happened if you hadn't?"
Several classmates turned toward him. It was the first question he had addressed directly to Chronies.
Her golden eyes met his.
For a moment, nothing happened. Then Renjiro felt pressure pass over his skin—faint, not physical. Inspection, probably.
His body reacted through habit before conscious intention caught up. His shoulders relaxed, breathing slowed, posture reduced, presence compressed into the same ordinary shape he had spent years maintaining at school.
Chronies' gaze remained on him slightly longer than it had on the others.
Then she answered.
"The transfer would have continued directly."
"To Asteria?"
"Yes."
"Alive?"
Silence.
The class stopped moving.
Chronies looked at him again.
"That could not be guaranteed."
Shizuka's expression changed instantly.
"What?"
"Cross-world transfer is not something ordinary human bodies and souls are naturally designed to survive."
Akari covered her mouth. Someone behind her took a step backward. Junpei's remaining humour vanished.
Shizuka stepped forward. This time she did not look frightened. She looked furious.
"They summoned my students through a process that could kill them?"
"Yes."
Chronies did not offer an excuse.
Renjiro watched her closely. If she was lying, she was exceptionally controlled. If she was telling the truth, then whoever waited on Asteria had already demonstrated something important.
They had accepted the possibility that the summoned people might die. Whether through ignorance or deliberate risk did not matter yet. Both were dangerous.
Shizuka's hands tightened.
"Then stop the transfer."
"I have stopped the immediate damage."
"Send us back."
"I cannot reverse the connection from here without creating a greater risk to your souls."
"Then keep us here."
Several students looked toward Shizuka.
Chronies' expression tightened.
"This space is not a physical world. You cannot live here indefinitely."
Shizuka held her gaze.
"So our choice is?"
"To continue the transfer."
Chronies looked across Class 3-B.
"And survive in Asteria."
Nobody spoke for several seconds.
Renjiro studied the rotating planet. Asteria meant an unknown environment, unknown language, unknown laws, unknown politics, unknown technology and unknown magic, assuming the word described something literal.
They had no money, no equipment, no legal identity and no confirmed method of returning home.
Objectively bad.
Panic still offered nothing.
Renjiro reorganized the problem into three priorities: capability, information, then autonomy. The order mattered.
✦ ✦ ✦
Chronies raised both hands. Golden structures returned around her.
"This is why I brought you here."
Something appeared between the two planetary images.
Not another world.
A translucent panel.
Lines of unfamiliar symbols moved across its surface.
Renjiro could read them.
He became completely still.
The writing was not Japanese. It was not English. Yet meaning arrived without translation effort.
Class
Blessing
Affinity
Soul Compatibility
Skill Integration
His eyes narrowed.
A system.
Not an analogy. A real structured interface.
Renjiro's attention moved beyond the visible panel almost immediately. There were layers beneath it—processes, sequences, authorization structures. A visible interface covering something much larger.
His pulse changed once.
Chronies continued explaining.
"Your bodies and souls must be adapted before the transfer resumes. Asteria possesses environmental and metaphysical conditions different from Earth. Without adjustment, the damage caused during transfer would continue."
Renjiro listened with only part of his attention.
Golden lines moved outward from Chronies. One touched Daiki. Another Akari. Shizuka. Reina. Junpei. Mika. One by one, every person in Class 3-B became connected.
Including him.
A strand of gold reached Renjiro's chest.
Warmth spread through his body. Then cold. Then something that was neither.
Information moved through the connection. Not language. Structure.
Something was reading him. Mapping him. Comparing.
Chronies continued.
"Each of you has different compatibility. The System will not force identical abilities upon you. Your Class, affinities and Blessings will reflect the structure of your body, soul and potential."
Questions erupted immediately.
"What kind of Classes?"
"Can we choose?"
"Can we use magic?"
"What happens if we're incompatible?"
Renjiro barely heard them.
He lowered his gaze—not from fear, but because he did not want Chronies watching his eyes.
The golden connection pulsed once, then again. Same pattern. Renjiro memorized the sequence.
The closest Earth comparison appeared naturally: handshake, authentication, validation, temporary permission. A trusted route opened.
His attention sharpened further. The connection did not merely inspect. It prepared to modify—to write directly into whatever Chronies had described as their souls.
That should probably have frightened him more than it did.
Instead, a different thought surfaced.
So that's how it works.
Chronies stood at the centre of dozens of active connections, answering questions while maintaining the larger structure. Her attention was divided, but not carelessly.
Renjiro returned his focus to the golden thread. The architecture was closed. He could see that much.
But during integration, something changed.
A gate opened briefly—not for Renjiro, but for a trusted process operating under Chronies' authority.
The sequence repeated: authentication, compatibility scan, trusted route, write, verification, close.
Renjiro watched a second time, then a third.
He did nothing.
One observation was not enough. He needed repetition. He needed to know what happened when an integration actually completed and understand the difference between the visible interface and the underlying process.
Across the white space, Chronies raised one hand.
"Before the transfer resumes, I will begin your integration one person at a time."
Golden light gathered beneath the class. Several students moved closer together.
Chronies' gaze crossed them.
Then stopped.
"Kanzaki Daiki."
Daiki straightened.
A circle formed beneath his feet. Golden rings rose around him one after another, each rotating along a different axis while lines of information appeared in the air.
The first integration began.
Renjiro watched every line, every pulse, every delay, every change.
For the first time since Class 3-B disappeared from Tokyo, the loss of his manga collection briefly stopped occupying any part of his mind.
Briefly.
End of Chapter 5