Osananajimi Ecchi Anime Details and Episodes On a hot summer school day, the junior is unexpectedly reunited with her beloved senior. "I'll be helping you study." with those words, he leads her into… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Hentai · Romance Heterosexual · Primarily Teen Cast · Large Breasts · Nakadashi Osananajimi Ecchi (Prequel)