My wife's mother secretly works at a super-high-class creampie specialist mature soapland: "Please keep it secret from all of my family..."

Takuya was hooked on horse racing in hiding from his wife. Unusually, I hit a big hole and went to a high-class soapland... and unexpectedly ran into my wife's mother! ! "Mother-in-law!? Why are you here..." "What! Takuya-kun!? Please, keep it a secret from everyone!" She is speechless and unable to hide her surprise at the secret face of her stepmother, whom she has never known about. "If you keep a secret, I'll provide you with plenty of service." Takuya nods as he is invited to her with her plump, busty body, and her soap technique, which is the number one nomination rate, invites her into an unprecedented world!