Old man Ebihara is approached by Nana in the park. She looks like she's about to die, so he worries. The two become close, and after school, Nana starts spending time at Ebihara's house. Unemployed Ebihara wants to continue this relationship, so he borrows money to entertain Nana. One day, a debt collector comes to Ebihara's place and proposes that Nana repay the debt with her body!
