In a lush park filled with the sounds of cicadas, we discover a slender, well-proportioned female college student. She belongs to a track and field club and runs every day. Her tall, slim physique is close to that of a model—she definitely doesn't need to lose weight. It's unusual for a young girl to run as a hobby, but she genuinely enjoys it. After her run, she agrees to come back to my place. When asked to flash her underwear, she surprisingly consents. She's wearing a sporty bra typical of athletic girls, which looks almost like a competitive swimsuit. But when she turns around, she's wearing a thong—modern underwear styles are astonishing; this kind didn't exist back in the day. Her breasts are still developing, slightly small but highly sensitive. The thin fabric of her underwear teases what's beneath, making it incredibly tempting. Stimulated with a vibrator and handjobs, she moans in a cute anime-like voice as her juices start to flow. She climaxes from fingering, squirting intensely, then collapses, dazed and weak. Yet, she grabs the cock in front of her, stuffing it deep into her mouth and sucking vigorously. Making wet, lewd slurping sounds, she fondles her nipples with one hand while orally pleasuring the cock with the other—clearly quite skilled. Unable to hold back, I push inside her, penetrating beneath the thin fabric. Her nipples harden instantly, and her slippery wetness overflows. She screams, "I-I-I'm cumming!" as she reaches climax, while I writhe and release inside her.