Mom's friend can ride Kawakami Nanami JUY-720

Yuya was delighted to hear that his mother's friend, Kawakami Nanami, was coming over, so he happily welcomed her. His mother went out drinking and partying that night, leaving Tatsuya and Nanami to look after the house. So, that night, they couldn't resist indulging in "adult time" and "having their fill"...