Takuro's father owes money to a loan shark, and with his father absent, Takuro and Natsu are trying to enjoy their carefree youth. Suddenly, a man named Ozawa, the loan shark's agent, appears. Fearing that Natsu might be taken away as repayment, Takuro is secretly anxious—but in the end, Natsu isn't harmed or mistreated. Instead, Ozawa reveals he's actually a kind person who protected Natsu. From this incident, a new bond begins to form between the two.