Breasts Are My Favorite Things in the World! Vol. 2 (manga)

Chiaki and her breast friend, Harumi, have landed themselves in a rather precarious position-topless, half nude, and hiding in a locker! If only that were the worst of their troubles...When a classmate learns of Harumi's after-school activities, her sincere advice threatens to break the bosom bond Chiaki and Harumi share!