
Amanchu!
S01E05: The Story of the First Time at Sea With Friends
Noticing Futaba struggling with strength, Mato has her and Hikari go jogging to build up strength. Along the way, they come across some students from diving school, Ai and Makoto Ninomiya, who turn out to be their upperclassmen in the Diving Club. After a hectic first meeting, Ai holds a meeting to discuss how Futaba will be aiming for an Open Water Diver Certification, which somehow ends in a chalk drawing session.
Overview
The hyperactive teenage scuba diver, Hikari Kohinata, lives in a small town near the sea. On her first day of high school she meets the shy transfer student, Futaba Oki, who is struggling to find a place after moving away from Tokyo. Hikari takes the lead, dragging Futaba into her hijinx, and the two soon become close friends
Episodes

Futaba Ooki, a shy girl who had just moved from Tokyo to the beachside town of Shizuoka, catches the eye of her eccentric classmate, Hikari Kohinata, who instantly befriends her.

S01E02 The Story of Doing Something Bad With Hikari
On her way to school, Hikari races against her homeroom teacher, Mato Katori, who she discovers to be a fellow scuba diver. Later that day, Hikari drags Futaba to the school's Diving Club, where they...

S01E03 The Story of the Secrets to Excitement and Happiness
Hikari leads Futaba to a road filled with cherry blossom trees to cheer her up. The next day, Hikari and Futaba sign up for the Diving Club, where Mato, the club's advisor, teaches Futaba about...

S01E04 The Story of Excitement and the Despairing Heart
Futaba comes to observe a scuba diving class run by Hikari's grandmother, Kino. The next day, Futaba has her first experience diving in the school's pool, struggling to keep water out of her eye mask...

S01E05 The Story of the First Time at Sea With Friends
Noticing Futaba struggling with strength, Mato has her and Hikari go jogging to build up strength. Along the way, they come across some students from diving school, Ai and Makoto Ninomiya, who turn out to...

S01E06 The Story of the False Wish
Futaba undergoes a pool course at the indoor pool, managing to properly learn how to clear her mask. However, it soon becomes apparent that Futaba doesn't actually know how to swim. Following the lesson, Mato...

S01E07 The Story of the End of Rain / The Story of the Beginning of Summer
On a rainy day, Mato decides to follow Hikari as she boards a train, discovering that her only reason for doing so was to witness some blooming hydrangeas for a brief instant. Later, on a...

S01E08 The Story of the Feelings Yet Hidden / The Story of the Things Yet Unknown
Makoto becomes concerned when Ai receives what appears to be a love letter from her classmate, only to later find it was addressed to another girl. Later, as Futaba and Hikari take part in various...

S01E09 The Story of the Memories You Can't Erase
Futaba, who always takes photos to remember each moment, becomes shocked when her phone's memory has become full, requiring her to delete or move her old photos, including those of her friends from Tokyo. As...

S01E10 The Story of Losing Your Way in Today
Futaba and Hikari invite Ai to hang out with them as they go shopping for logbooks and swimsuits. Afterwards, the girls go to the beach, where Futaba tells Kino about all the things she has...

S01E11 The Story of the Cat and the Kitten
Futaba and Hikari follow the club's mascot, Cha, leading them to take a path that neither of them has been down before. Along the way, they come across a small kitten that appears to have...

S01E12 The Story of the Blue World
The Open Diver course begins, with Futaba and Hikari paired up as buddies. Futaba loses one of her fins on the way to the descent point, but it gets picked up by another diver, turning...
Cast

Ai Kayano
Futaba Ooki (voice)

Eri Suzuki
Hikari Kohinata (voice)

Saori Onishi
Ai Ninomiya (voice)

Yuuichirou Umehara
Makoto Ninomiya (voice)

Kikuko Inoue
Kino Kohinata (voice)

Yurika Kubo
Cha-Komon (voice)

Chiwa Saito
Chizuru Himeno (voice)

Erino Hazuki
Akane Mizunashi (voice)

Fumihiko Tachiki
Principal (voice)

Ai Kakuma
Kotori Misaki (voice)

Ai Yamamoto
Kokoro Misaki (voice)

Aya Suzaki
Kodama Kohinata / Hime (voice)