Chisato felt guilty towards her daughter, who grew up in a single-parent household because of her own affair. So when her daughter got married, she firmly decided to do anything to protect her daughter's family. But what her son-in-law consulted her about was a suspicion of her daughter's affair... At all costs, we must avoid a divorce. Chisato, with that one thought, gave her son-in-law a blowjob. She'll take care of it instead of her daughter. That was Chisato's way of atonement, and ultimately protecting her daughter's family.
Center Village
