Boku no Gakkou no Ansatsu-bu

Fukasaku Reiji is 157cm tall, making him slightly shorter than the average girl his age, which he considers a significant issue. He encounters Mitajima Yukari, a classmate who commits a murder. She is part of an organization known as the assassination department, which targets specific individuals in society. After developing feelings for Yukari, Reiji chooses to join the group. The narrative follows his experiences as he navigates adolescence, relationships, and the challenges of entering a world involving firearms.