Go! Princess PreCure - Season 1 - Eps 16: An Oath to the Sea! Minami's Most Important Treasure!
The girls visit a seaside resort owned by Minami's older brother, Wataru, where they meet Minami's dolphin friend, Tina, and learn more about her aspirations to carry on the family business. Pained by the bonds shared between Minami and her brother, Twilight has Lock target Wataru to create an Orca Zetsuborg, while Shut creates Octopus Zetsuborg to fight against Haruka and Kirara, who learn of a Dress-Up Key nearby. As Minami struggles against the Orca Zetsuborg, she is protected by Tina, who once saved her life when she was young. Determined to save Tina, Minami awakens the power of the Bubble Miracle Dress-Up Key, allowing her to heal Tina's injuries and help the Cures defeat both Zetsuborgs.
About Go! Princess PreCure

Title: Go! Princess PreCure
First Air Date: 2015-02-01
Last Air Date: 2016-01-31
Status: Ended
Rating: 9/10 (from 10 votes)
Language: JA
Seasons: 1
Total Episodes: 50
Network: HTB tv asahi Nagoya TV Kyushu Asahi Broadcasting ABC TV NCC Oita Asahi Broadcasting Asahi Broadcasting Aomori Niigata Television Network 21 khb KFB HOME KSB Kagoshima Broadcasting Iwate Asahi TV Akita Asahi Broadcasting Yamagata Television System Shizuoka Asahi TV Asahi Broadcasting Nagano Hokuriku Asahi Broadcasting Ehime Asahi TV Yamaguchi Asahi Broadcasting Kumamoto Asahi Broadcasting Ryu-Q Asahi Broadcasting
Genres: Kids, Animation, Comedy, Action & Adventure, Family, Drama, Sci-Fi & Fantasy
Production Companies: Toei Animation
Synopsis
Go! Princess PreCure is set in a boarding junior high school, named Noble Academy. The protagonist Haruka Haruno is a 13-year-old first-year student. Her big dream is to be a princess someday because she admired a princess in the picture book she has kept since her childhood. One day, she transforms into Cure Flora with the "Dress Up Key" which Prince Kanata of Hope Kingdom gave her as a good luck charm when she was little. Then she also finds other Pretty Cure girls in her school, 14-year-old Minami Kaidou as Cure Mermaid and 13-year-old Kirara Amanogawa as Cure Twinkle. As the Princess Pretty Cure team, with two fairies Pafu and Aroma, they fight against the dark witch Dyspear, who hates all the dreams in the world and wants to turn them to despair.
Cast

Yu Shimamura
Haruka Haruno / Cure Flora (voice)

Masumi Asano
Minami Kaido / Cure Mermaid (voice)

Hibiku Yamamura
Kirara Amanogawa / Cure Twinkle (voice)

Miyuki Sawashiro
Miyuki Sawashiro as Towa Akagi / Twilight / Cure Scarlet (voice)

Nao Toyama
Pafu (voice)

Shiho Kokido
Aroma (voice)

Haruka Yoshimura
Yui Nanase (voice)

Mayumi Shintani
Miss Shamour (voice)

Shinnosuke Tachibana
Prince Hope Grand Kanata (voice)

Yoshiko Sakakibara
Dyspear (voice)