In a dungeon exploration gone horrifically wrong, an adventurer named Wolka suffers a mortal wound while shielding his female party members from a monstrous assault. As he lies dying, the memory crashes into him with terrible clarity: this world is the setting of a dark fantasy manga he read in his past life in Japan. He has been reincarnated not as the hero, but as an insignificant side character whose entire party is fated to be wiped out early in the story, serving only to establish the grim tone of the world.

Driven by a deep-seated hatred for tragic endings, Wolka refuses to accept this predetermined annihilation. He fights back with desperate, reckless abandon and, against all odds, manages to defeat the creature. The victory comes at a staggering physical cost, as he loses his right eye and left leg in the process, but he succeeds in averting the total destruction of his group. However, his relief is short-lived. The brush with death and his self-sacrificing heroism do not simply restore normalcy; they trigger a disturbing shift in the psyches of the young women he saved.

The female comrades, who had just faced their own gruesome demise, begin to exhibit dangerously intense and obsessive feelings toward Wolka. Their gratitude and trauma curdle into a desperate, possessive devotion. They make declarations of eternal protection, vows to never leave his side, and offers to dedicate their entire lives to him, creating a heavy and suffocating emotional atmosphere that Wolka finds profoundly overwhelming. The story follows Wolka as he navigates this new reality, trying to manage the increasingly unstable emotional states of his party members while living in a world that still holds countless other lethal threats. The narrative explores the aftermath of changing a dark destiny, focusing on the psychological toll of survival and the burdensome, often unsettling, weight of intense devotion from those whose lives were saved.