Recently, it seems my little sister has a boyfriend... I was used as a practice tool for her blowjob. 'Even though we're siblings, it's okay if it's just a blowjob, right?' she said, and her blowjob practice began. 'Hey, big brother! One more time!!!' While I was ejaculating, my sister continued to suck without taking a break, even with semen in her mouth, making me cum multiple times. I was thoroughly teased until my dick became useless. More than expected, my sister was serious...
