Yuu-san appears for the fourth time in "Otona no Vinyl Book," once again luring a neighborhood male student into the closet of her home and fulfilling her desires as a dominant seductress. On this day, Yuu appears to be in a mischievous mood, making the young man perform cunnilingus and enjoying handjob orgasm denial. She then mounts him, riding hard in a wild cowgirl position, relentlessly grinding her hips. As she delights in the guy's ahegao expressions, she repeatedly reaches orgasm herself, ultimately finishing the session by taking a creampie.