Maejima, the meek coach of the archery club and Mathematics teacher at Seika Women's High School, is on the verge of being murdered by an unknown assailant. Despite having dodged numerous attempts on his life, he's clueless about the schemer's identity. Additionally, the school head would rather handle it in-house as he assumes it's just a wayward student acting up. As both the school's faculty and students are potential culprits, will Maejima be able to unmask the perpetrator before his luck runs out?
