His stepmother Yui's behavior is very suspicious. She puts on makeup during the day and sneaks out, only to come home late at night. What's more, she's also a reckless spender. However, when he sees Yui's smile as she happily looks at clothes and jewelry, Noboru stops suspecting her and heads to a brothel to clear his cloudy feelings... But as if by some twist of fate, the girl he chose turns out to be Yui! An awkward silence falls between the two. Yui hurriedly stops Noboru as he is about to leave, and blurts out something outrageous. "I'll do you a favor in exchange for your hush money."