Michiru Kaiou
海王 みちる

Michiru Kaiou - Anime

Michiru Kaiou Sailor Neptune Sailor Form - Anime

Michiru Kaiou Sailor Neptune Super Sailor Form - Anime

Japanese: 海王 みちる
Romanji: Kaiou Michiru
Aliases: Michelle Kaioh (CWi English dub), Sailor Neptune, Super Sailor Neptune
Residency: Tokyo, Japan
School(s): Mugen Academy

Student, Professional Violinist, Art Teacher, Sailor Senshi


Haruka Tenou (girlfriend) (first cousin; CWi English dub only)


Solar System Sailor Senshi


Moon Kingdom and Crystal Tokyo

Birthdate: March 6th (♓)
Age: 16-17

165cm or 5'5"

Gender: Female
Species: Human
Blood Type: O
Likes: Playing the violin, painting, swimming, the colors turquoise and aquamarine, sashimi, music, Haruka Tenou
Dislikes: Sea cucumbers, kikurage, physical education, Sailor Moon interfering
First Appearance
Anime: A Handsome Boy? Haruka Tenoh’s Secret
Anime Voiced By: Masako Katsuki (Japanese)
Barbara Radecki (CWi English dub)
Lauren Landa (Viz Media English dub)

Michiru Kaiou (海王 みちる, Kaiō Michiru) is the civilian identity and present-day incarnation of Sailor Neptune.

Nomenclature & Etymology


Michiru's name means "to rise" while Kaiou means "sea king." Her original English name Michelle a French feminine form of Michel, from the Hebrew name Michael meaning "Who is like God?"



Like several other characters from the original manga who appear in the anime, Michiru keeps the same appearance as her original incarnation, except with her hair shortened from long to medium length.

Her first outfit is a dark red long sleeve sailor uniform with a shades of green ribbon at the center of her uniform and a Mugen Academy emblem in the center of her uniform, green and black checkered skirt and black shoes and white short socks. The color of her uniform is black.

Her summer uniform is similar to Rei's as she wears a dark red vest, with a white short sleeve sailor unifrom underneath her vest. She retains her shades of green ribbon, her green and black checkered skirt, socks and shoes from her winter school uniform.

Her primary casual outfit which is opposed to both Usagi and Ami's casual outfit. She wears a long cornflower blue formal jacket with a pale yellow long sleeve v-neck undershirt, dark blue long skirt and brown shoes. Her medium length teal hair is now tied in a high ponytail adorned with a purple ribbon at the center of her head. In Sailor Stars, she wears this outfit as her hair was loose instead of a ponytail.

Sailor Guardian

As Sailor Neptune, she retains her civilian appearance but wears a gold tiara on her forehead. Her sailor uniform's dominant color is teal (choker, linings of her gloves, tiara gem and skirt) and both her front and back bow is dark blue. Her choker was adorned with a single dark teal jewel with a gold trim on front that resembles a cross and wears a teal cross-lined heels to match her form.


Sailor Moon S

Michiru is Haruka Tenou's lover. Naoko Takeuchi explains that a feminine person and a masculine person would be attracted to each other even if they're both girls.

They agree that anybody who has a talisman must die, even if this means one of them kills the other.

Sailor Moon Sailor Stars

She returns in Sailor Stars and this time they are clearly on the same side as the Inner Sailor Senshi, though she and Haruka sell their souls to Galaxia. 



  • In one episode, she competes against Ami Mizuno / Sailor Mercury in a swimming contest to see who the better swimmer is. Although Ami holds back during the first race, she actually gives it her all in the next race and both are tied as the victors.
  • In the anime, Michiru had two image songs: Reminiscences of the Warrior and Fate Is So Beautiful.
  • In the CWi English dub, Michiru is named "Michelle" which sounds similar to her Japanese name Michiru.
  • In 1998, Irwin released a line of Sailor Senshi of the Outer Solar System dolls well before Sailor Moon S aired in North America. On the boxes of the Sailor Neptune dolls, she was given the civilian name "Nerissa."
    • Nerissa is a girl's name of Greek origin meaning "from the sea" or "sea nymph".
    • Nerissa was a character in William Shakespeare's play The Merchant of Venice'.
  • In an attempt to censor homosexuality, the Cloverway English dub made Michiru (Michelle) and Haruka (Amara) very close cousins.



Sailor Senshi

Solar System Sailor Senshi Sailor MoonSailor MercurySailor MarsSailor JupiterSailor VenusSailor Chibi MoonSailor PlutoSailor UranusSailor NeptuneSailor Saturn
Sailor Starlights Sailor Star FighterSailor Star HealerSailor Star Maker
Other Sailor Senshi Sailor Chibi Chibi
Civilian Identities Usagi TsukinoAmi MizunoRei HinoMakoto KinoMinako AinoChibiusa TsukinoSetsuna MeiouHaruka TenouMichiru KaiouHotaru TomoeSeiya KouYaten KouTaiki KouChibi Chibi
Allies Tuxedo MaskLunaArtemisDianaPrincess Kakyuu

Solar System Sailor Senshi Sailor MoonSailor MercurySailor MarsSailor JupiterSailor Venus / Sailor V
Other Sailor Senshi Sailor Luna
Civilian Identities Usagi TsukinoAmi MizunoRei HinoMakoto KinoMinako AinoLuna Tsukino
Allies Tuxedo MaskLunaArtemis

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