[Stand-to-Pee] A delicate beauty with a lady-like appearance, struggling financially, meets a horny woman who turns into an aggressive sex maniac once naked, capable of vertical squirting — [C-65, 24-year-old college student with 2 years of stand-to-peeing experience]. Approached in broad daylight in Nishi-Shinjuku, she reveals she's doing stand-to-peeing to pay tuition and living expenses. Her usual rate is for a handjob, double for bareback. She negotiates calmly, clearly very experienced. On the way to the hotel, I negotiate filming rights and she agrees for 50k, so we start shooting openly. Standing sex work must be stressful—once inside the hotel, she visibly relaxes, smiling more freely. Just as foreplay begins, the door opens and her junior, who shares the room, barges in! Worse, he claims she's his type and offers 500k to take over (huh?!). He even grabs the camera. Since she's indifferent and willing to switch for money, I have no choice but to back down. Later, watching the footage shot by the junior, I'm shocked. The shy girl who was so reserved with me transforms into an entirely different person—dominating him aggressively! Whispering filthy talk, noisy blowjob, edging with handjob, relentless teasing—she unleashes an insane arsenal of seductive techniques! She won't let go of his cock, moaning loudly, cumming repeatedly in ecstasy! Finally, the junior fakes losing control and deliberately creampie-fucks her. After seeing this, I've got no choice but to return to that spot, staking it out again until I reunite with this horny babe! [Scenes] Street negotiation, hotel entry, lingerie peek, light teasing, replaced by junior, lingerie photoshoot, nipple play, fingering, blowjob, handjob, cunnilingus, hand-fucking, squirting, missionary penetration, squirting during sex, cowgirl, doggy, standing doggy, missionary creampie.