RARA, who captivates with her overwhelming visuals, boldly takes on the role of a "festival gal" in this work! At a local festival wrapped in summer heat, Satoru, a college student returning home, reunites with RARA, his childhood friend's older sister and a bright, free-spirited gal. Fueled by alcohol, the distance between them closes instantly, and a casual remark—"Want to try a little? Lol"—leads to an unexpected relationship. What started as a joke escalates as RARA becomes obsessed with the feeling of Satoru's big cock, begging for "just one more time" while her hips never stop moving in cowgirl position...! Satoru, unable to stop his erection from the variable-speed cowgirl riding delivered by RARA's slender body, finds himself drained of cum over and over again... The entire three days of the festival, capturing their relationship accelerating with momentum and passion, is fully recorded! The hottest and sexiest summer begins.