Naisho no Yoshuu Anime Details and Episodes A secret relationship that no one knows. He started "secret practice" with his best friend's girlfriend. Kissing, holding hands… all of this was supposed… Series info Watch free DetailsFormatMangaStatusAiringSourceOriginalCountryJapan GenresDramaEcchiRomance TagsHeterosexualLove TrianglePrimarily Teen CastNetorare RecommendationsAitsu no Kanojo