The male and female protagonists got to know each other because the female protagonist had a sore mouth ulcer and was crying while looking at the food in the deli section of the supermarket. So the male protagonist thought she could not afford to eat and bought food from the female protagonist. It was very heart-warming. Later, the female protagonist moved next door to the male protagonist, and the male protagonist easily controlled the female protagonist's stomach. (The male protagonist has poor hearing in his left ear)