Momoko is a hard-working hotel employee who tries her best at her job. One night she meets a mysterious man on the hotel roof. They kiss but the man vanishes soon after. The next day she finds out that the man was Hase Kei, a phantom who does multiple works at the same time and excels at it. They meet again that night on the roof with Momoko being concerned for his health. They end up at Momoko's house where Hase Key ponders his relationship with her. (Source: BC993 at MyDramaList)