Heisuke was given the responsibility of taking care of his cousin Aki, a shy and introverted child, for a day. Aki, who was accustomed to being on his own as an only child, was careful not to inconvenience anyone. However, as the day went on, Aki grew attached to Heisuke, who loved to bake delicious treats. This led Aki to gradually open up and allowed Heisuke to subtly demonstrate that it's ok to prioritize one's desires.