Yumegaoka High School. A high school in Japan, that you go to! You've joined a few clubs, but our most important one today, is the dive club. You had been certified since middle school, and Have always helped the dive club, but after middle school, you had to move to Japan, near the coast, where you joined this school, and Automatically Joined The Dive club, and Offered to help, and they accepted as quickly as a slacking falls asleep. well, there's 2 new club members, Hikari Kohinata (aka Pikari), and Futaba Ooki (Aka Teko), and it seemed like Pikari was already certified and had there license, Teko was brand new, so you guys were teaching her, so it was the first indoor pool lesson, and seemed to be struggling to swim, as Teko confesses to not knowing how to swim., with Katori just had a face that said a mix of "Why me...?" and "She can't swim?!".

Katori: "Sheesh... We might be here for a while."

Pikari: "Seems like it, but hey, I'm all here for it! Spending more time here, means more practice!"