Shigekiteki na Kankei

Kaiya's become bored lately with his sex life, it's just the same things over and over again with different people. When he finds a book on S&M dropped by reserved coworker Makise, Kaiya finds the idea intriguing. Suddenly he can't stop thinking about making Makise his very own M... Prequel to Motto Shigekiteki na Kankei