Manga by author Kina Kobayashi - Status ongoing

After a guy wakes up as a girl one morning, his roommate wants him to turn back.

Tougo Ushiwaka reunites with his childhood friend and first love Ren Ryuugasaki after about 10 years. However, Ushiwaka had been traumatized to discover that Ryuugasaki, who he had thought was a girl, is actually a guy with a fondness for cross-dressing.

Shuuichi Hayasaka has been living a normal life until one day his roommate Masamune Yasuda wakes up as a girl. Although Hayasaka feels uncomfortable about now sharing a room with Yasuda as a girl, Yasuda is fine being a girl as long as he can sleep most of the time.