Harukoi Otome

Harukoi Otome revolves around protagonist Akihito Hayasaka, a male high-school sophomore. The high school he attends (St. Francesca Academy) used to be an all-girls school, and still has a high percentage of female students. Akihito's younger sister (Umi Hayasaka) and his childhood friend (Yuika Serizawa) are also students there. Akihito meets many girls there, and becomes friends with them.

Kazuto Hongo (protagonist of BaseSon's fifth title, Koihime Muso: Doki Otome Darake no Sangokushi Engi) is also a student at St. Francesca; it is also the setting for the Koihime Muso OVA episode.