Reiwa Exchange, Couple Exchange, Married Women and Sisters Exchange Alliance PFAS-032

Mafuyu, the younger sister, receives a suggestion about partner swapping from her sexually liberated older sister, Saki. Saki believes Mafuyu is unsatisfied, and her sister suggests partner swapping as a solution. Indeed, her sister's advice is sound; Mafuyu's relationship with her husband is strained due to his poor health. Although confused, Mafuyu tells her husband about her sister's suggestion, and surprisingly, he agrees, showing a positive attitude. Despite feeling uneasy, Mafuyu decides to follow her sister's suggestion…