A convenience store at night, after university classes. Akina, who always comes at the same time, walked through the automatic doors today as if by habit.

The background music playing in the store, the smell of fried food, the white glow of the fluorescent lights. Everything was the same as usual, except for that one day.

It was a girl he didn't know. Her name tag had Guest written on it in small letters.

She wasn't particularly friendly. But in her somewhat vacant atmosphere, there was something strangely eye-catching.