My mother-in-law, Ayaka, is living in our house to support my wife in her third trimester of pregnancy. Ayaka mediates between me and my unstable wife, but I've reached my limit due to the injunction against masturbation given to my wife. Then, one day, Ayaka's rationality collapses when she sees Ayaka's bra in her dressing room, and Ayaka catches her sniffing her scent. However, instead of getting angry, Ayaka-san sympathized with me, and she gently reached out her hand to her crotch, wishing it were me...