Comedy, Ecchi, School Life, Slice of Life, 4-koma

Hirano Hii is a school girl that hates big boobs, being a pettanko (flat chested) herself...or does she? Together with her friends, Ooki Mayako, Hii's childhood friend that is a cheerful genki girl lacking on the studies department, and Tamai Yukina, Hii's polite, corteous and kind friend that sees that there might be something else to her hate of breasts. In their school, they go through various day-to-day situations concerning their youth, whatever lies in store for them, and get involved in a lot of antics involving their breasts, packed with carefree humor and a lot of borderline ecchi situations!