"Hayate and Takayuki have come to the stadium to cheer Shun on in his handball tournament, but for some reason Shun's friend Souma is missing. It turns out that he went onto the wrong train... Meanwhil Shun is really fired up about winning as much as possible to prolong being together in a team with his teammates who will retire after this event, but the hype backfires and he can't quite perform right..."

Souma is really susceptible to cracking up, and even memories will put him into laughing fits. But being self-conscious about this, he always tries to hide it. When he does this again at a clothing store his friend works at, the friend asks him why he does that, especially when it's so easy to tell anyway. Later, Shun also repeats the same sentiment...

Souma invites Motoharu to go to the summer festival with Hayate, Shun, and Takayuki. After meeting Takayuki again, Motoharu also got to meet all the others. Having a natural talent for communicating, he's become friendly with all of them, except for Hayate. Hayate is always nervous, leaving Motoharu a little sad that they are not making progress. Therefore, Motoharu takes this opportunity to put a new idea to the test...