My Best Friend's Sister Found Out That I Was A Premature Ejaculator, And She Kept Playing With Me For 30 Ejaculations During Our 3-day Sleepover By Licking Me All Over My Body And Nakadashi (reverse Thrusting) Me...

Three days staying at my best friend's house. My best friend's sister (apparently called Unpai-san), who's oddly close, teases me until I unexpectedly blow my load. Even then, I don't go soft... and she finds out I'm a premature ejaculator with insane stamina! Immediately treated like a cum toy! Whenever there's an opening, my dick is stroked and licked, and my sperm is squeezed out over and over! [Sex near my sleeping best friend / Bathroom intrusion sex / Caught in the hallway for handjob and blowjob / Secret blowjob during breakfast] Toyed with by my dick anytime, anywhere, 30 ejaculations! I... I can't cum anymore...!