My girlfriend and her sister opened a YouTube channel called "swimsuit sisters". The views are quite high and both are quite famous. Today, my girlfriend asked me to help film a video and it was also the first time I met Sumire. From the first time, I was attracted to her hot body and skimpy swimsuit. After filming, my girlfriend and I went to her room, and we had sex right there. Ms. Sumire also secretly watched us. When I went down, she used her big breasts to seduce and squeeze out all my sperm. At night, she continued to sneak in and want to fuck me even though her girlfriend was sleeping right next to me! She even allowed me to "play naked" and ejaculate inside her pussy, something my girlfriend has never allowed! And from then on we continued to secretly fuck each other every chance we got. That was until I was preparing to go to France to study with my girlfriend. But things didn't end that easily. Sumire invited me to have sex with her one last time, and that last time was discovered by my girlfriend....