Tsutomo is a ronin. He spends his time working part time in his family’s drug store. While doing that, he’s preparing for next year’s entrance exam.
On one midnight, he gets this customer: a little girl named Yu. She often comes by. She says that she can only go out at midnight. Tsutomo tries to ask her out o daylight, but she refuses.
When Yu accidentally left her wallet, Tsutomu has a chance to go to her house. But, she’s not the same girl he meets on midnights.