Breasts are My Favorite Things in the World Manga, Vol. 6

It's the school culture festival, and everyone has boobs on the mind, but no one more so than... Riku? With loads of visitors coming to the campus, the discipline monitor is determined to keep abreast of any lewd goings-on and put a stop to them before they can happen! And when Chiaki is deprived of boobs for too long, she invites Hana to her house to make up for lost time...Fondling on the bed, meeting relatives--as the relationship between these two bosom friends charges ahead, Hana grapples with the new feelings swelling in her breast!