[Forbidden Pleasure] My wife's two daughters came to visit me while I was away on a business trip. Little sister Lala is 144cm tall, and Rina is 149cm tall. We spend our days together taking baths, eating meals, sleeping together, and getting along well. But because she loves me so much, she said, "I'll take your place as mom," and started to live an extreme life... Little sister Lala's body is still thin and innocent. Big sister Rina's body is starting to look more adult-like. Hairless. Her immature body is forcing me to go crazy, and it drives me crazy. Even though I know it's not right for an adult, I gave in to the temptation of my in-laws... an immoral creampie.