A cute, innocent-looking student named Nakajo Aoi approaches a worn-out middle-aged man on the street. The middle-aged man hanging his head in despair was taken aback, but upon hearing 'I don't have a dad. The dad I remember was really healthy and kind. When I see a dad who looks depressed, I want to cheer him up. So I bought this can of coffee with my last pocket money,' he was moved by the can of coffee handed to him. After meeting several times, Ao actually starts discussing her life problems, saying things like 'I'm from a single-parent household and am having financial difficulties.' The middle-aged man who has fallen in love offers to give her money and help out. "I want to marry someone like you in the future," Ao said, tears welling up as she expressed her gratitude. The middle-aged man was satisfied with this scene. One day, after giving her money, he chased after Ao to return something she had left behind and caught sight of her on a date with another man. The middle-aged man, in his shock, witnesses a scene where Aoi is giving money to the guy. 'I'm making him dream and getting paid for it, so I'm doing something good, right?' she laughs, revealing her true face. Seeing Aoi like this, the middle-aged man decides on revenge and resolves to punish the evil bitch...
