"Won't you let me stay for just tonight? I don't have any money, but I will be sure to reward you...?" Kitamugi Kouji, a middle-aged virgin bachelor, was approached by this complete stranger of a high school girl in front of the station. Kouji figured it was something suspicious and tried to get away from the high school girl, but she ended up following him all the way to his home. And so begins the life of a middle-aged man and a high school girl living together. They start to know each other and their bond grows stronger. This is a love story of a couple with an age gap between them --- --- but that won't be the end of it...