22-year-old Rin, a stunning C-cup beauty with a mature charm, works at a cabaret club and has a boyfriend, giving her a refreshingly real and relatable vibe. Standing tall at 168 cm, she wears an army-style swimsuit that highlights her sexy, sophisticated allure as she's lured into the Magic Mirror Van by the seaside. Currently a fourth-year university student busy with job hunting, she skillfully balances her nightlife work and personal relationship. With around six sexual partners so far, she's young yet carries a distinctly adult sensuality—especially drawn to more dominant, assertive men. Today, she meets Ken, a middle-aged man in his fifties, for a special challenge: helping a man struggling with sexual dysfunction masturbate to climax within 15 minutes, winning 150,000 yen if successful. Gently supporting his insecurities, Rin performs careful, tender foreplay—breast fondling, soft nipple teasing, and a crouching handjob—before taking his long-overdue, explosively sensitive cock into her warm mouth. The man hasn't ejaculated in 48 years, making this his first penetration ever. With lewd, squelching sounds, he unleashes a non-stop torrent of pent-up cum until his balls are completely drained. In round two, they switch to doggy style, standing thrusts, seated positions, and cowgirl—Rin embodying mature eroticism. Clearly addicted to big cocks, her body craves deep, pounding sex that makes her cry out in pleasure. As a summer memory, they set off fireworks, screaming through wave after wave of convulsing orgasms—creampie after creampie! Then, for her first facial, she pleads, "Don't cum inside—cover my face instead!" Laughing, she exclaims, "Am I coming too much? Wow, this is crazy delicious!" A vivid showcase of Rin's uninhibited, passionate nature unfolds in this unforgettable encounter.