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Plot
After 6 years of living apart due to the death of their parents, the Himenokoji twins, Akito and Akiko, are finally reunited when Akito desires to live as a family once more. Although things are fine at first, Akiko begins to express her incestuous love for her older brother, who only sees her as his little sister.
Where to watch OniAi?
OniAi is an anime show featuring Ibuki Kido and created by Daisuke Suzuki.
OniAi is currently streaming on Crunchyroll, Crunchyroll Amazon Channel and Funimation Now.