Name: Kaioh Michiru
Meaning: Mature Sea King
Alternate Spellings: Kaiou
Seiyuu: Katsuki Masako
English Name: Michelle
Height: 5' 4"
Birthday: March 6
Approximate Age: 16 in the S season
Zodiac Sign: Pisces
Blood Type: O
Element: Ocean Water
School: Muugen Gakuen and Juuban High
Grade: 10th in the S season
Hobbies: Cosmetics, Violin, Painting, Swimming
Favorite Color: Marine Blue
Favorite Food: Sashimi (Meat Strips)
Least Favorite Food: Kikurage (Mushrooms)
Favorite Subject: Music
Least Favorite Subject: None
Favorite Stone: Aquamarine
Strengths: Playing the Violin, Painting
Weaknesses: Sea Cucumbers
Goal: To be a violinist
In the Silver Millennium, Michiru was one of the guardians of the solar system from outside attacks. She lived in Triton Castle as the Princess of Neptune. She is quiet, artistically inclined, with a soft sense of humor. She is very elegant, mature, and lady-like, but also tense and distant. Michiru comes from a wealthy family. She is in love with Tenoh Haruka, and they both live together. She is a famous professional violinist. She owns a mansion by the sea and enjoys visiting aquariums and art galleries.
Michiru and Haruka enter the show in the S season when they are searching for the Talismans and the Messiah. They are shocked to find out that the Talismans were inside themselves. Michiru's Talisman is the Deep Aqua Mirror. She is only in the S and Stars seasons of the TV show. Michiru, Haruka, and Setsuna left during the SuperS season to raise baby Hotaru. Her attacks are Deep Submerge and Aqua Mirror Reflector. She transforms with "Neptune Planet Power, Make up". In the manga she uses the attack Violin Tide and transforms with "Neptune Crystal Power, Make Up".