It's summer break, and the pool is getting ready to be cleaned. Hiroyuki and his friends are hanging out by the pool, and Hiroyuki says he just wanted to see what was going on with the pool. He's a little worried about how the pool will be cleaned, since it's going to be so hot, but he's happy to see that the water is cool, and he and his friend are able to squeeze in a little bit of water. They're having a good time, though, because they're wearing wet swimsuits, which are super cool. They don't want to get caught in the mud, but they do want to have a good swim. They decide to go to the party, but Hiroyuki is bummed that he can't swim with them, since he always wears the same old, competition-style bathing suit.