Centimillimental (センチミリメンタル) is a solo project by the song-writer, composer, arranger, pianist, guitarist and programmer Atsushi, who won the Grand Prix at the 2015 Inuzuma Gate under the pseudonym 「ねぇ、忘れないでね。」(“Hey, Don’t Forget”).

On March 1, 2017, he released the track 「ラブソング」under the same name he had used for Inuzuma Gate.

It wouldn’t be until 2018 when he would start using the