"Just a little insertion doesn't count as cheating..." She tempted me, playing with my penis in a slow, agitated way. My girlfriend's older sister is a super slutty, busty internet celebrity, Momozono Rena FPRE-126

On a friend's recommendation, I saw the famous internet celebrity, Momozono Rena, who streamed in revealing clothes and was known for her lewd and cute style, and became a fan. One day, I stayed at her house for the first time, and to my surprise, Momozono Rena was there! It turned out she was my girlfriend's older sister, and I had to try my best to suppress my excitement. However, she seemed to read my mind and, dressed in extremely revealing clothes, tempted me by saying, "Just a little bit doesn't count as cheating..." Although I really liked my girlfriend, I couldn't resist the allure of Momozono Rena's large breasts, and ultimately succumbed to pleasure...