Osaki Rui

 (大崎瑠衣) is a member of Sayonara Stay Tuned and #DSPMSTARS.

She is also a former member of Chu☆Oh! Dolly, Jelno!, and Choushi Genki Musume. She was transferred from Jelno! to Chu☆Oh! Dolly with the latter group's formation.

Singles

 * Chouzetsu☆Happy! Generation!

Mini Albums

 * Hashiridase! Chu☆Oh!Dolly

Singles

 * Hit Chart de Suki ni Shite!
 * MAX! Avenue
 * 3-Kai Kimi no Namae wo Jumon no You ni Tonaetara...
 * Girl's, Re Ambitious / Kekkyoku... I Love You

Singles

 * Sayonara Stay Tuned

CD-Rs

 * Baka Shiyo?

Music Cards

 * Everyday Natsu

Digital Singles

 * Dare mo ga Furimuku Kira Kira Shita Onnanoko
 * DoDoDo IDOL!
 * Love☆Summer ~Natsu no Mahou~