It's finally time for Futaba's open water course as she sets off for a whole new world she's never seen before and reflects on her journey there.

Futaba and Hikari take a walk down a path neither of them know, and end up finding a tiny kitten all on its own.

Hikari and Futaba lend Ai a helping hand when she's lost trying to figure out how to spend the day.

Futaba's phone memory maxes out, reminding her that her memorable photos are nothing but data.

Ai and Teko are revisited from Makoto's and Pikari's perspectives respectively and reveal a surprising side to their personality.

The changing of the seasons affects the mood of everyone in the Diving Club, especially Katori Mato. However, she ends up finding ways to enjoy the moment with a little help from her friends.

While taking a pool course to prepare for the Open Water Diver certification, Futaba reveals a rather unexpected fact.

Hikari and Futaba finally meet their seniors in the Diving Club, but the meeting doesn't exactly go as planned...

Futaba observes an ocean diving exercise to prepare for her pool training and gets more motivated. Unfortunately, she runs into trouble in the pool...

Hikari tries to alleviate Futaba's apprehensions about her new life in a way that she knows best. Futaba later has to "study" as her trial period in the Diving Club begins.

As Hikari sets off for another fun-filled school day, Futaba wakes up feeling an unexpected sensation in her heart.

Having moved recently, Ooki Futaba still hasn't gotten over her old life. That's when she has an encounter with the ocean and a peppy girl.