Yoji Akutagawa is an exceptional doctor who lacks people skills. He lives with his nephew Kento, who's in his second year of junior high. Unfortunately, the two have trouble communicating. So in an attempt to mend their relationship, Yoji offers to pay Mr. Yagi, Kento's tutor, 20,000 yen an hour to be his personal instructor on human emotions.For Kento, a student preparing for his entrance exams, summer is a very important time. Seeing him study diligently with Mr. Yagi every day, Yoji lets it slip that he is actually jealous...