Keitai Shosetsuka (携帯小説家; Mobile Novelist), the full official title being Gekipro Gekiharo Dai 4kai Kouen "Keitai Shosetsuka" (劇団ゲキハロ第4回公演 ｢携帯小説家｣; Gekipro Gekiharo 4th Performance "Mobile Novelist"), is a stage play starring ℃-ute. It was the fourth collaborative theater work between Gekipro and Hello! Project as Gekiharo. It was written and directed by Ota Yoshinari. The pay ran between October 17 and 26, 2008 at the Ikebukuro Sunshine Theater in Tokyo. The DVD was released on January 21, 2009.