My wife's much younger sister Yuno, who came to Tokyo for summer cram school and will be staying at our place for two weeks. With a gentle personality, she unknowingly seduces men with her innocent face and fair skin, which deeply appeals to my ロ〇コン heart. I decided to play with her nipples without my wife (Yuno's sister) finding out… I'll make sure she rats me out. After developing my nipples, I became a premature ejaculator and fucked my stepsister crazy multiple times
