Aina is introduced by Eri from the previous episode. She is a stunning mother with a slender, model-like figure. Her husband is away on a long-term work assignment, leaving their marriage completely sexless, and the frustrated wife has been relying on masturbation to handle her pent-up desire. Her modest breasts are highly sensitive, especially her stiff nipples. During her first sex in far too long, she moans at full volume and cums again and again. The chain of hooking up with mothers never ends.