San Nen Sa Anime Details and Episodes Childhood friends Mizuki and Kazuya are separated by three years. That's not a big age gap, but it means they couldn't share their youth experiences… Series info Watch free DetailsFormatMangaStatusFinishedScore74/100SourceOriginalCountryJapan GenresRomanceSlice of Life TagsIyashikeiComing of AgeFamily LifeSeinenHeterosexual RecommendationsBonnoujiHorimiya2-sai Sa no OsananajimiTonari wa Nani wo Kuu Hito zoTonari wa Nani wo Kuu Hito zo: HoroyoiTonari no Oneesan ga SukiSenryuu Shoujo CharactersKazuya MizusawaMizuki MizusawaNaoto Mizuzawa (Supporting)