Hotaru and his friend seiichi are planning to steal the house of Amemiya, the mother of their young son. They're not surprised, they say, because they've known each other for a long time. But they're even more surprised when they find out that they don't know each other's names, and that they'll be keeping each other in the backyard "like a pet" . Hotaru says he's going to protect his friend from the intruders. He's also going to make sure that his mother doesn't have anything to do with it, because she's the one who's trying to raise her son on her own. He says that he'd be sad if he knew that his friend and his wife were looking out for him. He tells his friend that he should be more considerate, because his mother is trying her best to raise a child all her own, and he should think of her as a single woman, not as an employer or an employee.