Former Girigiri Girl, Mochizuki Rumi Mochizuki, who debuted in ＜MUTEKI＞, makes her first appearance on Madonna!! Rumi ends up taking a part-time job at the cafe where her younger sister works for a short period of time, in place of her younger sister who is on maternity leave. With her experience as a gravure idol and her natural ability, she quickly gets used to the job, but... One day, a man named Oki, who was a fan of her at the time, applies for a part-time job at the cafe. Oki is so moved by the sight of the girl he once admired, that he can't suppress the urge that is smoldering inside him...