Mafuyu is the younger sister Saki, who is sexually uninhibited, suggests that she exchange partners.Her frustration appears on her face, and her sister says that switching partners is the best way to relieve her.It is true that as my sister pointed out, Mafuyu and her husband are not in good condition.The reason is that the husband's man herself is not doing well.Despite being confused, when I told my husband about his sister's suggestion, he surprisingly acted that it wasn't bad either.Despite feeling anxious, Mafuyu decides to take advantage of her sister's suggestion...
