OniAi

お兄ちゃんだけど愛さえあれば関係ないよねっ

Akito Himenokōji, a high school student managing the student-council dormitory, is reunited with his twin sister Akiko after six years apart following their parents' death. Akiko wastes no time declaring her romantic feelings for him — feelings Akito firmly does not return. Life in the dorm grows more chaotic as fellow residents Arashi Nikaidō, Anastasia Nasuhara, and Ginbei Sawatari each complicate the household dynamic in their own way.