The 2012 ecchi harem series OniAi has arrived on Hulu and Crunchyroll, complete with English dub and subtitle options. The 12-episode run follows Akito Himenokouji, who finds his life complicated when his sister Akiko, harboring romantic feelings for him, moves in to live with him. Their already tense living arrangement escalates with the arrival of three more girls, turning their apartment into a chaotic harem scenario.
Produced by SILVER LINK., the studio behind Kokoro Connect and Strike Witches: Road to Berlin, OniAi adapts the manga of the same name. The series leans heavily into its harem and ecchi elements, set against a school life backdrop, and explores the awkward dynamics of Akito navigating his sister's affections alongside those of his new housemates.
With the full 12-episode series now available to stream on both platforms, viewers can binge the complete story. OniAi is a straightforward entry into the ecchi-harem genre, characterized by its overt fan service and comedic misunderstandings stemming from its central premise.