Anyone who used One's Own Life Reincarnation had to pay with their life. Only a cheat-powered bastard like Shinichi could minimize that terrifying price.
To put it simply, there was a cost, but not much of one.
There was certainly no chance he would pass out from weakness.
So he was deliberately pretending to be unconscious, all to give Nagato and Konan the impression that he had paid a heavy price to heal Nagato.
If he had healed Nagato effortlessly, they would have thought it was just a trivial favor, and they wouldn't have felt nearly as indebted. How was he supposed to win them over afterward?
Once Konan laid him down to rest in a quiet room, Shinichi dropped the act, excitement creeping across his face.
He held a few strands of red hair in his hand. Yes, he had taken them earlier while Nagato wasn't paying attention!
[Ding! Nagato's biological information detected. Extract now?]
"Extract immediately!"
[Biological information successfully extracted! Congratulations, host. You have obtained the talent trait: Let the World Know Pain (Gold).]
Ohhhhhhhh!
Another golden legendary!
He had expected it, but seeing it with his own eyes still made it hard for Shinichi to contain his excitement.
The talent trait's name did invite some strange associations, though. It was Nagato's iconic line, famously misheard as "How many floors must a bag of rice be carried up?" But however Shinichi looked at it, it still felt awkward.
None of that mattered, though. What mattered was how useful it was!
``` [Let the World Know Pain (Gold): You proclaim yourself a god and wage war for peace. Whether you are a god or a lunatic comes down to a single thought. Let your inner edgelord burn bright. Dōjutsu power +1500%! Soul strength +1500%! Granted