OniAi trailer

• Comedy
• Romance
• Ecchi

OniAi follows Akito Himenokōji, who is reunited with his twin sister Akiko after six years apart. The two were separated when their parents died and each was placed with a different foster family. Now they live together under one roof and attend the same high school. Akiko has developed an intense brother complex and romantic feelings for Akito, who sees her only as a younger sibling he must protect. Their household grows crowded when several girls move in, including student council president Nikaidou Arashi, vice-president Nasuhara Anastasia, and Sawatari Ginbei Haruomi, who followed Akito from Kyoto. Each of them has an interest in Akito in one way or another, and they compete to care for him and to claim his attention. The premise is a light, comedic household romance centered on Akiko's rivalry with the other girls.