OniAi

After losing their parents, siblings Akito and Akiko Himenokouji were separated for six years, living with different families. Now reunited, they begin living together-but Akiko’s feelings for her brother go beyond sibling love, while Akito sees her only as family. Their quiet life is disrupted when three more girls-Anastasia Nasuhara, Arashi Nikaidou, and Ginbei Haruomi Sawatari-move into their apartment. Akiko’s dream of having Akito to herself vanishes as the newcomers each develop their own romantic interest in him. With the girls competing for his attention, their flirtations and advances push the limits of what any ordinary guy could handle.