17 Seito Anime Details and Episodes Arioka Yukihiro. 17 years old. A third-year high schooler. He is capable of handling things well and has good looks. That’s why he takes things for… Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresDramaRomance TagsBoys' LoveAge GapSchoolTeacher Related17 Kyoushi (Sequel) RecommendationsSora to Hara CharactersYukihiro AriokaMakoto Mishima