Everlasting Snooze

Hypnotherapy clinic receptionist Cereus Bai lives a boring life until he finds out that he has lost his memory of yesterday. His boss and doctor Vere Strauss confirms that lost yesterday was just a boring day like his previous life. But mysterious men keep appearing in his life one after another. The self-proclaimed roommate Kurokawa Ryo, the frivolous and charming hypnotist Magenta, and the looming mysterious boy... They all seem to be related to Cereus's "yesterday". What happened yesterday? Does all this really matter? Is Cereus ready to face his yesterday, or even all his past?