"Shy and bad at dating," after a bold seduction... my girlfriend's younger sister goes into heat, and I secretly NTR'd her—the worst at sex. Sakuragi Mion FSDSS-649

She's 150cm tall, and her younger sister is 165cm, and I'm fascinated by those figures... They have a nine-head-to-body ratio and amazing physiques! Her younger sister, originally calm and serious, becomes bolder and more daring during sex! Even with her older sister right there, she uses a devilish NTR-like approach to get her vagina dripping wet! She stimulates my sensitive areas with continuous ejaculation oral sex and skillful footjobs with her long legs! "I don't need you to break up with your sister or anything like that, just lend me your little brother occasionally."