Succubus to Hajimeru Shinken Kousai

Yoshiki Tsuyoshi leads the Seizai High Karate Club, which enforces a strict ban on romantic entanglements. After rescuing a girl named Akuno from an attacker, she starts to pursue him despite his commitment to purity. She is described as clumsy yet not entirely innocent. The story explores the limits of Yoshiki's devotion and whether he can maintain his ideals in the face of her advances.