Tomosato Ogino, a brilliant doctor, loses his life in an earthquake while operating on his younger sister. However, he finds himself reincarnated in another world... more>> and given the vocation of an "assassin" who specializes in the ability to kill people. As he struggles with the fact that he has lost his sister and his vocation, a girl who looks exactly like his sister appears in front of him...? In this otherworldly fantasy suspense, a former doctor who makes his living as a "revenger" gets involved in various incidents. <<less