The story follows Kirishima Ryuki, who has recently started dating Kirill. Despite losing his memory each time he experiences a climax, Ryuki is haunted by a faintly familiar scent he can’t place.One day, after excelling in a soccer match, Kirill invites Ryuki to the backyard to give him a special reward. However, with the sound of teammates nearby, their shared guilt quickly transforms into a dangerous thrill. In their excitement, they nearly get caught and flee to a nearby flower bed—only to encounter their childhood friend, Chiaki.Chiaki, openly hostile toward Kirill, challenges Ryuki to a surprising competition: a “School Naked Blue ○ Tour”! Under the bold light of day, each of them must shed their inhibitions—and clothes—pushing their boundaries to satisfy their desires.But as tensions rise, the question remains: how will this wild encounter end?