Onecha. Anime Details and Episodes When Momoka's mother and Touri's father married, the two kids became sister and brother overnight, but as they grew up together, this relationship began… Series info Watch free DetailsFormatMangaStatusAiringScore53/100SourceOriginalCountryJapan GenresComedyEcchiRomance TagsSeinenIncestInsekiSchool RecommendationsIljinnyeo GildeurigiJigoku ni Ochite yo, Onii-chan