DASD-990 The unwitting temptation of a natural wife and sister to be asked to refuse.

She's worried about Saito's dinner and cheering for his exam, and she's a beautiful woman and she's got a big body, and there's no reason not to fall in love with her, but he's also looking for a husband who's got a happy family, so there's a contradiction he can't like, and one day, she hears sadness coming from her home during the day, and Saito's desperate to help.