They Are All Reborn, Who Is Still a Killer?

[Rebirth + multiple female protagonist group portraits + low martial arts abilities + pretending to be a pig and eating a tiger] In his previous life, he was a feared ghost in the dark world and the sharp blade of a top killer organization, but he failed to defect. When he opened his eyes again, he was reborn back to the age of 12 - the summer before he was abducted by the organization and his fate had not yet fallen into the abyss. In this city where superpowers lurk, he seems ordinary, but he can use his fighting skills honed in his previous life to break the arrogance of superpowers with his bare hands. With every kill, the flesh and bones are quietly evolving: the speed exceeds that of a cheetah, the strength crushes steel bars, and it can even predict the death trajectory of 0.3 Seconds - so what if you don't have superpowers? His body is the sharpest knife. But fate never let him go. The gears of fate are turning again: the hunting bounty in the dark world, the "new human" transformation plan in the underground laboratory, and the madman dormant in the shadows, shouting "Join the glorious evolution"... It turns out that the more he escapes from his identity as a killer, the more he is pushed into the center of the storm.