Kamatteachan Shinsei is a Japanese rock band from Chiba, formed in 2007. The band consists of Noko (lead vocals, guitar, keyboards), Mono (leader, keyboard, guitar, tambourine), Misako (drums), and Chibagin (bass, chorus).

In 2018, the group's song Front Memory was chosen to serve as the theme song for the 2018 live-action theatrical adaptation of the Japanese manga After the Rain, covered by singer Emiko Suzuki and arranged by Seiji Kameda, with band members Noko and Mono additionally contributing to the film's soundtrack. In summer 2018, in celebration of the group's 10 year anniversary, their 9th studio album, Tsun×Dere (ツン×デレ, Tsundere), was released on 4 July 2018, with the song Akizora Cider (秋空サイダー, Autumn Sky Cider) featuring vocals by Regal Lily vocalist and guitarist Honoka Takahashi