Oni no Sumu Ie Anime Details and Episodes This is a story about the protagonist coming to his grandma's house to play over summer vacation. Flirting and making out ensues. (Source: Melonbooks,… Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresFantasyHentai TagsMonster GirlMILFIncestAge GapYoukai RecommendationsOni no HimitsuOni no YuOejiin: Hanyeodeul