Kaido Minami

She has long emerald-green hair, with some of it styled in a braid that hangs over her left shoulder.

Her eyes are sky blue and express both sophistication and warmth.

In casual wear, she prefers blue-themed clothing, often paired with bare feet in high heels.

As Cure Mermaid, her hair turns a vibrant blue in a voluminous ponytail with a touch of purple in her bangs.

Her Pretty Cure costume is inspired by mermaids: a midriff-baring outfit with a skirt that resembles a fishtail, accessorized with pearls and white boots, and long gloves.

Transformation scenes feature splashing water and pose her elegantly like a mermaid gliding under the sea.

Kaido Minami is responsible, disciplined, and sometimes strict due to her strong sense of duty.

She is compassionate and genuinely cares for her friends, always ready to lend a hand or offer guidance.

Despite being seen as a "princess" and admired by many, she has an approachable and soft side that grows through her friendships.

She is hardworking and strives for perfection, passionately training in ballet, horseback riding, and archery.

Though she rarely reveals her vulnerability, she can be shy when her weaknesses are pointed out, especially by family or close friends.

She has a cute side—such as blushing and making excuses when flustered.

Fear of ghosts stems from a childhood trauma, making her scared at the mention, even as a hero.

Born July 20, Kaido Minami is the daughter of the CEO of the powerful Kaido Group, making her a well-known heiress.

She is called "the princess of the school" and "Minami-sama" by her peers, admired for her intellect and beauty.

She excelled in both academics and sports, leading her to the position of student council president.

Despite her popularity, she was seen as unapproachable until becoming friends with Haruno Haruka.

She has a close-knit family, addressing them respectfully, often adding "sama" to their names.

Her childhood friends Seira and Ayaka affectionately call her by name, as do her companions after they grow closer.

Cure Mermaid’s powers are themed around the ocean, water, and elegance.

Her abilities include manipulating water, creating protective ripples, and summoning powerful aquatic attacks in battle.

She excels at water-based combat and can move gracefully in and out of water, thanks to her ballet training.

Her techniques involve water, ice, and bubbles, such as "Precure Mermaid Ripple," "Precure Frozen Ripple," "Precure Bubble Ripple," and the grand "Precure Coral Maelstrom."

She can form-change: Mode Elegant transforms her outfit spectacularly for her finishing moves; premium and royal forms grant further power-ups and divine appearances.

Her ultimate transformation, Grand Princess, turns her into a radiant, goddess-like heroine with a flowing golden dress and royal regalia.

She is especially close to Haruno Haruka, whom she initially addresses formally but comes to see as an equal friend and partner.

She serves as a mentor and an older-sister figure to her Pretty Cure team: Haruka, Kirara Amanogawa, and Akagi Towa, guiding and supporting them.

She forms a special bond with Towa, sensing their similar struggles about showing weakness and sharing their vulnerabilities.

She eventually overcomes her fear of ghosts thanks to encouragement from Haruka and her teammates.

She is caring and respectful towards her fairy friends and refers to Prince Kanata with polite address.

Her family relationships are characterized by deep respect and formality.

She had never eaten donuts or taken photo booth pictures before being invited by friends.

During a sleepover, she brings three suitcases packed with unusual items, wanting to be fully prepared and avoid causing inconvenience.

Her favorite things include the sea and tea.

Her catchphrase is "The princess of the clear sea, Cure Mermaid!"

She is passionate about marine life, which influences her changing dreams later in the series.

“The princess of the clear sea! Cure Mermaid!”

“Everyone has things they're not good at, don't they?!”

“If you can't balance your studies with your dreams, maybe you should stop!”

“Knight, may I rely on you sometimes?”

Early Encounters and Student Council Life

Kaido Minami initially upholds a strict, formal demeanor as student council president.

When Haruno Haruka is late to the entrance ceremony, Minami sternly tells her to decide her own punishment.

After seeing Haruka’s determination during ballet practice, Minami opens up, treating Haruka as an equal and expressing gratitude for being depended on.

Upon finding a Dress Up Key on the beach, Minami awakens as Cure Mermaid, embracing her new role as protector.

She soon becomes a guardian figure to Haruka, guiding her in balancing dreams and academia, even if it means giving tough love.

Minami gradually softens; her friends notice she smiles more and becomes more approachable.

Facing Fears and Growth

Despite being outwardly unshakable, her fear of ghosts is revealed during a ghost-themed incident.

Alone against a Zetsuborg ghost, Minami falters, but with Haruka’s support, finds the courage to fight her fear and triumph.

A joyful highlight is her request for Haruka to be her dance partner at a formal party, solidifying their friendship.

Her struggle with swimming is overcome with the help of Tina the dolphin, showing her commitment to growth.

Changing Dreams

Minami’s initial dream is to join the family business and become someone as dependable as her father and brother.

After meeting Kitakaze Asuka and developing an interest in sea life, Minami’s dreams shift toward marine science and becoming a sea veterinarian.

This internal conflict temporarily weakens her Pretty Cure powers, but her friends reassure her: “Dreams are allowed to change—as long as you follow your heart.”

Summoning her courage, Minami confides in her family, who encourage her in her new path.

After the final battle, Minami studies under Asuka and becomes a marine scientist as an adult, fulfilling her new dream.

In team compositions, Cure Mermaid is associated with blue and “cool” Pretty Cures.

Her motif is based on the classic fairy tale character "The Little Mermaid," but without a specific model, simply the broad concept of a "Princess of the Sea."

She’s voiced by Masumi Asano.

Her transformations and power-ups have multiple costume variations, each themed by water, ice, bubbles, or coral.

Cure Mermaid also appears in Pretty Cure All Stars as the 39th Pretty Cure.