Grand Blue Dreaming Vol. 15 (manga)

Summer's coming to an end, which means it's time for Iori and his pals to head back to class. Everyone's bummed that they didn't make any precious summer memories. So, they decide to hold a little party to pick up chicks. Unfortunately, Iori knows every girl at the get-together, and he's the only one standing between them and some idiots looking to score!