After spending so much time together, Rintaro has begun to suspect he may like Kaoruko as more than a friend. But just as the school term was drawing to a close and Rintaro began looking forward to spending his first summer vacation with all his friends, Subaru springs a surprise on him: Kaoruko's birthday is only a few weeks away! So now, after agonizing over what to get her, he finally decides to bake her a cake with his own two hands. Will the effort and devotion he's putting into his cake be able to touch Kaoruko's heart...?