One day, the student council president Chinu announces unexpectedly that all members are prohibited from wearing underwear. The reason for this was because she wanted to get back at Seigo, who is in charge of general affairs. While protesting her decision, he thought that this might actually end up being something good. The other girls demand that he make her change her mind, but they are unable to do so.

[From Hau~ Omochikaeri!]