Onii-chan Dakedo Ai Sae Areba Kankei Nai yo ne!, often abbreviated as OniAi, is a romantic comedy anime series that explores the comedic and awkward dynamics of a brother-sister relationship. The story follows Akiko Himenokouji, who harbors romantic feelings for her older brother, Akito, leading to humorous and complicated situations. As they navigate high school life, the series delves into themes of family bonds, friendship, and love, all wrapped in light-hearted comedy and eccentric character interactions.