The boy, orphaned and living alone with his younger sister, discovers that his once-gentle sister is gradually becoming a yandere. She locks him up, and in the end, she kills him. When he wakes again, he finds an angel standing before him, ready to send him to be reborn in another world. But before he can celebrate, he learns that his sister has also been reborn. In this life, he does everything he can to hide his identity and evade his yandere sister. With his teammates’ help, he finally manages to eliminate her, only to discover that she can be reborn endlessly. The yandere sister smiles eerily and says, “Big brother, did you think being reborn would let you escape me?”
