Chuu Bra!!

Nayu Hayama, the protagonist of the tale, makes a fool of herself on the first day of middle school when she unintentionally flashes her adult underwear. Yako Jingji and Haruka Shiraishi, two other students, look into reports that she is involved in "enjo ksai," or compensated dating (which is frequently perceived as being similar to or the same as prostitution). They quickly discover that Nayu is a "underwear monitor" who analyzes new underwear goods and has valuable knowledge about the proper undergarments for people to wear. By establishing an underwear club, Nayu intends to assist everyone in getting through a crucial stage of their lives.