Kazuki is a quiet and calm former novelist. He is quite observant and often takes notes in order to help him see things more clearly. Kazuki prefers to be alone, but also enjoys the company of his unit, F-LAGS. Because of his imagination, he sometimes makes up stories about others. He is very quick at reading, as shown when he read many thick books in one week despite all of his work, and is also good at memorizing books. After being inspired by Ryo Akizuki, who started performing as a male idol, Kazuki became an idol in order to change himself and to show the world his true self.

Kazuki has social anxiety and is often seen standing off to the side at parties and going out of his way to avoid crowds. However, Kazuki will go somewhere if Ryo and Daigo are going too. Ryo and Daigo can also tell when Kazuki is feeling uncomfortable and will act silly to try and make him feel better, like in the Halloween Live 2015 event where they surprise him with big, costume hats to make him smile.

From "THE iDOLM@STER: SideM" franchise which spawned a game, live shows, and comics, comes a short anime featuring the idols from 315 Production in mini form. The total number of idols on the show... is all 46 of them! <br><br>(Source: Crunchyroll)

Kazuki Tsukumo