The protagonist, Ryuki Kirishima, became an adult a few days ago. When he goes to the river with his friends, he strips naked and jumps in!! He tries to boast about the experience he had a while ago to everyone, but Cyril was squatting in front of him. As punishment for breaking his promise, Cyril orders Ryuki to be the camera operator, and he starts video recording with his friends. Ryuki, seeing this scene, felt jealousy, regret, and poured out his unspeakable feelings to Cyril! To make a summer memory, the Virgin Hunter Cyril descends!! He uses 5P Blue Circle to squeeze out every last drop.