Hisashiburi ni Saikaishita Osananajimi ga Mutchimuchi Gal ni natte ndakedo

Yuuki returns to his hometown and transfers to a recently co-ed school, where he reunites with his childhood friend, Ai. He is surprised to find that she has grown into a voluptuous gal who aggressively flirts with him in class. After Yuuki bravely saves a cat from a speeding truck, Ai rewards him with a blowjob. This intimate encounter leads them to confess their mutual feelings and engage in sexual intercourse. As they continue their passionate lovemaking, they discuss their deep emotions and a shared childhood promise, culminating in an intense climax.