This drama is adapted from the manga of the same name, telling the story of Gojo Shinna (Kouta Nomura).) is a high school student who is very interested in making traditional Japanese Hina dolls and aspires to become a “tōshi”.However, because his interests are different from those of his peers, Xinai feels lonely in school and alienated from other classmates.

Kitagawa Umume (Riko Nagase)) is a popular figure in school. She looks glamorous, but in fact she is an obsessed cosplay enthusiast.When Hai Meng discovered Xinai's excellent ability in making puppet costumes, she asked him to help make cosplay costumes.As the cooperation between the two gradually deepens, their relationship is also quietly changing...