Chii Mayu

 (千依まゆ; formerly ちいまゆ) is an original member of CHEMICAL X, a former second generation member of FAKE PLANCK STARS, and a former original member of My Best Friend (As Mayuzumi Hatsume; 黛実初芽).

She graduated from My Best Friend on September 25, 2022.

EPs

 * Start EP

Digital Singles

 * Kanousei (FILM_SONG.)

Albums

 * 【M.F.D】~My First Diary~

Singles

 * My Best Friend
 * We create the world
 * Killer Tune
 * My Best Heroine

Digital Singles

 * Youthful Alternative
 * Iya Iya Saretemo I love You