Phase I
1. With proper written consent you can get half of the talents/abilities/skills (full body constitution) of anyone.
2. After defeating a person and getting a written consent, you can get all the talents/abilities/skills (including body constitution) of the said person.
When Rei sat at his futon and read through all the new memories that he had just received from nowhere, he understood that this was his "Great Sage" equivalent after landing here. Of course the above was just a summary of his ability that he had just received, and it was a bit more complex than that but these were the main points of his ability.
With a wave of his hand, a page materialized in his hand. The page was pristine. Structured. Cold. At the top, bold lettering appeared:
"Ability Transfer Contract – Authorization"
Below it, lines of text arranged themselves neatly, far too neatly.
Terms and Conditions:
*The User (Rei Amagi) may acquire abilities through mutual contractual agreement.
*Consent must be willing, informed, and acknowledged.
*Partial acquisition grants 100% compatibility transfer.
*Forced extraction without consent is prohibited.
*The user will grow according to the growth rate of the entity/person.
*The entity/person is prohibited to speak/write about this binding or any secrets related to the user (Rei Amagi) to any third entity/person.
*The user might take time to get full control over his abilities depending upon the diligence of the user.
Rei's eye twitched slightly.
"…Ah yes. Of course. Even in another world, I still can't bypass consent laws." He actually found it a bit hilarious reading the first lines on the page. And just like the previous time another page materialized, but the words were a bit different now.
*The User (Rei Amagi) may acquire abilities through mutual contractual agreement.
*Full acquisition grants 100% compatibility transfer.
*Full acquisition requires defeat condition + written consent (can use force for consent).
*The user will grow according to the growth rate of the entity/person.
*The entity/person is prohibited to speak/write about this binding or any secrets related to the user (Rei Amagi) to any third entity/person.
*The user might take time to get full control over his abilities depending upon the diligence of the user.
He reread the lines. Then again. Then one more time.
"…So I beat someone up…"
"…and then politely/forcibly ask them to sign a contract?"
There was a long silence. Rei slowly leaned back.
"…This is the most ridiculous and bureaucratic power I have ever seen."
The page flickered slightly. As if offended.
"…Don't glare at me," Rei muttered. "You're literally paperwork."
But internally he was very happy. He didn't know if the memories that he had received were true or not but seeing the page that had materialized out of thin air, like an instinct, something told him that this was true. And this was just the Phase I.
The next morning arrived far too quickly for Rei's liking. It was because he had slept quite late after the initial excitement. Adrenaline was high, and for the first time he saw hope in this world, so of course he was beyond jubilant.
Rei sat cross-legged on the floor, staring at the page in front of him.
"…Alright," he muttered.
"If this works, great."
"If it doesn't…"
He paused.
"…I'll pretend nothing happened."
(A solid plan. Flawless, even.)
A few moments later, he walked into the main room where Hana was sorting medical supplies and go to the hospital for her work.
"Good morning, Rei," she said without looking up. "You're up early."
"I need your signature."
Hana froze. Slowly she turned her head.
"…I'm sorry?"
Rei held out the floating page. Completely serious.
"Please read it and sign on it."
There was a pause. A very long pause. Hana blinked once. Then twice. Then she looked at the page. Then at her five-year-old son. Then back at the page again.
"…Pfft—"
She covered her mouth. Then failed.
"Hahahaha—!"
Rei stood there. Completely still. Completely serious. Hana leaned back slightly, laughing harder now.
"You… you want me to sign this?" she asked between laughs.
"Yes."
"…Do you even know what a contract is?"
Rei looked at her. Deadpan.
"…Yes."
"…Oh."
That answer came a little too fast. She took the page anyway, still amused.
"Alright then, let's see what my very serious son has prepared…"
Her eyes scanned the page. Slowly. Casually. Then more carefully. The smile didn't disappear.
But it did… pause.
"Hmm…"
Rei watched her closely.
"Please make sure you understand everything written there," he said calmly.
"Consent must be informed."
Hana froze again.
She looked up at him.
"…You're saying that like you've done this before."
"…No," Rei replied.
A beat passed.
"…But it's important."
Hana looked back at the page. This time more attentively. Her medical instincts were kicking in—not because of the content… But because of the structure.
The clarity. The intent behind the wording. This didn't look like something that a 5 year old could even think, let alone write. But here it was. She had always known that her kid was an intellectual genius but this was something else.
"…Rei," she said slowly, "You surprise me from time to time..." Rei just smiled at her compliment.
"Well," she said lightly, "If my son went through the effort of making such a detailed 'legal document'…"
She tapped the page.
"…the least I can do is play along."
She found a pen nearby and signed her name at the Signatory________.
And just like that, she signed. The moment her name was written, the paper vanished from her sight and she suddenly from nowhere came to the realization that the paper she had signed was actually real.
Her eyes went wide.
"…Rei?" She was breathing heavily now. "What was that?"
"My ability..." Before Rei could even explain what it was, his body suddenly felt warm. It was as if something else was introduced in his body and before he knew he felt dizzy.
"…Ah—"
His vision blurred. The warmth turned into heat. The heat turned into pressure. His small body trembled.
Hana's instincts kicked in immediately.
"Rei?"
But Rei didn't respond. Because in that moment. His body was experiencing something it had never known before.
Chakra.
Not slowly awakened. Not naturally developed. But suddenly and forcefully introduced. And his young body… Didn't know what to do with it.
"Rei!"
His breathing became uneven.
"…Too much…"
His hand instinctively clutched his chest.
Then everything went dark. His body went limp.
"REI!"
Hana caught him before he hit the ground. In an instant, the laughter from moments ago was completely gone.
Replaced by pure panic.
"Rei—Rei, look at me!"
No response. Her hands moved fast. Years of training taking over. Pulse check. Breathing. Temperature.
"…Heartbeat's irregular—"
Her other hand moved to his abdomen. Then his chest. Chakra sensing. And then, she froze.
"…No…"
Her eyes widened.
"…This… this isn't possible…"
She could feel it. Clear as day. Chakra pathways.
Active.
Flowing.
Unstable—but present.
"…He didn't have this yesterday… No this wasn't supposed to be present on anyone at this age, at least not at this amount. This is too much and too sudden."
Her breathing grew heavier.
"…Rei…"
Her grip tightened slightly as she held him closer.
"This isn't natural…"
Her mind raced. Trying to make sense of what she was feeling. Medical logic. Shinobi knowledge. Experience. None of it explained this.
And then a realization hit her.
The contract.
Her eyes widened further.
"…That wasn't a joke…"
Her gaze dropped to Rei's unconscious form.
"…That was real."
A chill ran down her spine. And then, another realization followed. Stronger. Colder. More terrifying.
She opened her mouth...
"I need to—"
Her voice stopped. Her throat tightened. No sound came out.
"…!"
She tried again.
"I have to tell—"
Nothing. Silence. Her body froze. The clause.
The entity/person is prohibited to speak/write about this binding…
Her eyes trembled slightly.
"…I can't…"
She tried again.
No matter how she framed the words, no matter how she tried to say it, her voice simply… refused.
"…I can't tell anyone…"
Her grip on Rei tightened slightly. Not even, she stopped herself.
Because even thinking it clearly made her chest feel heavy.
"…Not even…"
She closed her eyes. Daichi. A deep breath left her.
"…Alright…"
Her voice was quieter now. The panic didn't disappear.
But it was pushed aside.
Because right now, she wasn't just a mother. She was a medical-nin.
And her patient was her son.
"Focus…" she whispered.
She adjusted his position carefully. Supporting his head. Regulating his breathing. Her hand glowed faintly with chakra.
"…Your body isn't used to it…"
She could feel it clearly now. The imbalance.
"…Too much too fast…"
"…Slow down…"
Gradually Rei's breathing steadied. The chaotic flow of chakra began to calm. Not fully controlled but no longer violent.
Hana let out a quiet breath.
"…Good…"
Her hand trembled slightly. Just slightly.
Because now that he was stable. She had time to think. And thinking… Was the worst part.
Her eyes lingered on Rei's face. Peaceful now.
"…What have you brought into this world…" she whispered.
The room was silent. What started as a joke… Had now become something far beyond her understanding. And she was the only one who knew.