Kotoha, a sweet A-cup angel who just entered university, is still a fresh first-year with zero experience. At her club's welcoming party, she struggles to fit in with the other girls and feels nervous when upperclassmen approach her. Her biggest worry is how inexperienced she is compared to her peers. One particularly memorable moment was her first time with a senior from her sports club. The kind, admired upperclassman she looked up to suddenly transformed into a wild beast the moment they were naked, aggressively pouncing on her—leaving her even more anxious. Since then, chances to get close with guys have been rare, and she's arrived at today still largely inexperienced. This special day will mark Kotoha's awakening, fully supported and guided every step of the way.