Spending a loving day off with her boyfriend, Akari Neo receives a sudden call from an upperclasswoman in her university circle. "What are you two up to? It's fine if you're with your boyfriend—just come to the drinking party!" Dragged along against her will, she arrives late to the gathering. The seniors, full of mischief, quickly get Akari's boyfriend drunk and pass him out. Right beside his unconscious body, they start fucking Akari bareback. Unaware that he won't wake up, the circle members take turns in a gangbang, escalating into a creampie-filled orgy.