Manji stops counting bodies long enough to realize he's been alive so long he forgot why death matters. When Rin enters his world, the show pivots, suddenly his immortality isn't a curse to solve through arithmetic, it's a weight he carries by choosing to stay alive for someone else. The violence never gets prettier, but somewhere between all the blood, it becomes about whether a killer can be worth saving, and whether he's worth saving himself.
Manji has spent centuries as an immortal swordsman, watching countless people fall by his blade. Weary of endless existence, he strikes a bargain with the witch who cursed him: kill a thousand evil men to balance out the good ones he has murdered, and he can finally die. What seems like a straightforward path to redemption becomes far more complicated when he crosses paths with Rin, a young girl consumed by her own need for vengeance against the sword school that destroyed her family. Together they become targets for relentless enemies who emerge from every shadow. Rin's quest for justice and Manji's desperate pursuit of mortality intertwine as they move from one brutal confrontation to the next. The series balances raw, visceral action sequences with quieter moments that reveal how violence shapes the soul. Both characters carry trauma that threatens to consume them entirely, forcing the question: can revenge ever truly lead to peace, or does the cycle of killing simply continue? Raw and unflinching, this is a story about two broken people trying to survive long enough to find meaning in their suffering.