Shou-chan is a member of the public morals committee who wants everyone to have a healthy relationship, and is worried about his childhood friend Sayo. Because she carries the blood of a succubus, she often approaches her beloved her Shou-chan in any way to make him "lovey-dovey sex". As he persists in having a healthy relationship, which is full of lust and surrounded by questionable students, will Shou-chan manage to keep his sanity?

Shou-chan es un miembro del comité de moral pública que quiere que todo el mundo tenga una relación sana, y está preocupado por su amiga de la infancia, Sayo. Debido a que ella lleva la sangre de un súcubo, a menudo se acerca a su amado Shou-chan, de cualquier manera para darle “sexo amoroso y alegre”. Mientras él se empeña en tener una relación sana, la cual está llena de lujuria y rodeada de estudiantes cuestionables, ¿logrará Shou-chan mantener su cordura?