Owing his experience of playing the guitar, Shinich Mitsui made his major-label debut as a guitarist in his youth. Since then, he has joined numerous rock bands and worked as a support member for various artists. With his refined guitar skills, he is committed to composing a melody that will get stuck in your head once you hear it.

His major works are: Kaori Mochida, NGT48, PASSO☆, Pile, Yui Ogura