|Source: Rinoa Kanzaki on World Cosplay|
Shortly before graduating elementary school, Haruka, Makoto, Nagisa, and Rin participated in a swimming tournament then later parted ways. Years later, a reunion with Rin ends up with a challenge to a swim race, in which Haruka loses. However, not wanting to be defeated so easily, Haruka gathers Makoto and Nagisa, along with a new recruit named Rei to form the Iwatobi High School Swimming Club.
Might be a little too much eyecandy for our female readers, but hey, how could I resist? The cosplayers are Yu(遊) as Haru, Key as Makoto, Shotaro(章太郎) as Rin, Chihiro(ちひろ) as Nagisa, Yutsube(ゆっべぇ) as Rei, and Rinoa Kanzaki(りのあ神崎) as Go! Thanks to Yui for sending this in!