Sekai Project has published the English version of episodic visual novel Idol Magical Girl Chiru Chiru Michiru on Steam for Windows. It’s a spin-off title from the Grisaia trilogy of visual novels and was originally released for PlayStation Vita in Japan last year.
You play as Matsushima Michiru as she dreams of becoming an idolized singer but only performs at a dingy basement bar on the weekends. One night, Michiru sees a falling star and wishes upon it to make her dreams come true.
Instead, what actually happens is she is visited by Nyanmel from the World of Magic, who comes with a request: "Become a Magical Girl, and save the world!"
Idol Magical Girl Chiru Chiru Michiru is split into an anime-like format with 13 episodes in total. The first part is currently on Steam and that contains seven episodes. The second part, due soon, will bring the remaining six episodes.