Kokoro's "Tee-hee-hee!" Getting from Junior High School to High School could be a whole different world. This short, simple nine-episode miniseries is about the transition, witnessed from the eyes of three new high schoolers. Details Casts Videos Galleries Posters Season Lists Title Kokoro's "Tee-hee-hee!" Genres Drama Mystery First Air Date 2021-08-15 Last Air Date 2021-08-15 Episode Runtime 00 Hours 10 Minutes Total Season(s) 1 Total Episode(s) on All Seasons 9 Runtime 10 Production Companies WOWOW Sora Tamaki... Okuno Kokoro... Ten Yamasaki... Torii Asuka... Riku Onishi... Segawa Kotaro... Ui Mihara... Horiuchi Nana... Ichika Osaki... Moriyama Mei... Akiko Kikuchi... Okuno Hana... Kokoro no Fufufu / こころのフフフ upcoming Japanese drama cast, age & synopsis 💕💕 (Trailer) Original Size (1280x720) Original Size (602x789) Season 1 9 Episode(s) 2021-08-15