Manato Hamada

In a Japan where humans and demons co-exist peacefully, Yuzu is an ordinary high school girl who lives in the shadow of her older sister, who is the bride of a demon. One day, she has a life-changing encounter with a beautiful ogre who claims her as his bride.

Rina and Aoi are a pair of identically dressed girls who become influentially popular in Harajuku. Through the kind favors of suspicious talent broker they appear in a music video, but afterwards, it is only Rina who is recruited by a talent agency.

Taiga wakes up in an unknown place, next to Niina with whom he had lost contact. Confined in a school with former elementary school classmates and their teacher, they find themselves forced to participate to a sadistic game: "The Werewolf's game".

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".

This work depicts a "five" locked room mystery drama about two high school students, which develops in the first train in the early morning, the family restaurant after school, and the gondola of the Ferris wheel. A word that suddenly changes from everyday life to extraordinary, a psychological warfare on searching each other's minds. Youth, a fragile blue human figure, is depicted in a peculiar situation called a locked room.