Things have finally quieted down for Koutarou and the Corona House crew, meaning it's time to kick back and have a little summer fun! Things start off at the beach where swimming, volleyball, and a test of courage are all on the menu. After that, there's still plenty more fun to be had at a local festival and the amusement park. But when summer vacation draws to a close, Yurika's worst nightmares come true... And what's this about a surprise visitor at the apartment?