Kuwazuru Mitsuki is a second year student at Arakawa Nishi High School. One day, her homeroom teacher, Tachibana, suddenly announces the start of the "Letter Game", where every student has to write a letter with his/her true feelings to each of the classmates. However, the "letter" will not include the sender's name. At first, there were a lot of bad jokes and silly "letters", but they slowly accelerate to revealing secrets and confessions, which make everyone question, "Who is the sender?" and "Who will be named next?" This game allows the students to become more aware of each other's hidden worries and thoughts, which slowly deepens the bond among the classmates. Meanwhile, Mitsuki tries to search for the sender of the letter sent to her and she discovers a secret hidden in this "letter game".
幸澤沙良
as Mitsuki Kuwazuru
櫻井海音
as Ikuru Narita
藤原大祐
as Touya Ichinose
柄本時生
as Jyunta Tachibana
駒木根葵汰
as Ken Mitarai
窪塚愛流
as Hiroto Baba
三浦獠太
as Yutarou Moro
内海誠子
as Hana Watanabe
野村康太
as Ujita Seiji
さなり
as Kazuta
今井竜太郎
as Gaku Ogida
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
Episode 13
Episode 14
Episode 15
Episode 16
Episode 17
Episode 18
Episode 19
Episode 20
Episode 21
Episode 22
Episode 23
Episode 24
Episode 25
Episode 26
Episode 27
Episode 28
Episode 29
Episode 30
Episode 31
Episode 32
Episode 33
Episode 34
Episode 35
Episode 36
Episode 37
Episode 38
Episode 39
Episode 40
