Centimillimental (センチミリメンタル)

Centimillimental is a Japanese j-pop music project led by Atsushi (温詞), who writes the lyrics, composes and arranges the music, sings, and performs both piano and guitar. Built around a hands-on approach to songwriting and performance, the project blends singer-songwriter craft with self-produced arrangements and a clear identity for anime listeners. Centimillimental began in 2012 as a four-member band under the same name. Atsushi later launched the solo project "Hey, don't forget" in 2015 and won the Grand Prix at Inazuma Gate that same year, supported by Epic Records Japan. In 2018, he merged "Hey, don't forget" into Centimillimental, turning it into the solo act recognized today. The project is also closely associated with Given: Centimillimental performed the opening theme for the series and worked on the lyrics and composition of the rest of the songs used in the anime.