Tonoda and Hachioji are best friends since high school and live together. One day, Hachioji's girlfriend mocks their male friendship, saying, "No matter how close you are, you can't have sex with your best friend," which leads to their breakup. That night, a drunk Tonoda is persuaded by Hachioji, who asks, "If it's no different from masturbation, want to try it?", and they end up having sex on impulse...!? We are in love now--

A "Free Love Research Club" where even "capturing another persons lover" is allowed - The unpopular student Haruto Sudou is a new member of this club and already taken in by Kaiouji, who's called "the Satan of the World of Dating Paries".

Hikaru starts sharing a room with his fastidious twin brother, Sorahiko, and his beastly younger brother, Umihiko. Hikaru, who has secretly been in love with Sorahiko, is thrilled to be living together!　However, it seems that the distance between him and the fastidious Sorahiko is not going to get any closer... But he can't seem to close the gap between him and Sorahiko... Then his brother, Umihiko, attacks him in his sleep and makes him cum!　What is Hikaru's fate? (-DeepL)