

Sailor Neptune
“Neptune Planet Power, Make Up!”
- japanese name
- Kaiou Michiru (海王みちる)
- 90’s english dub
- Michelle Kaioh
- name meaning
- the sea king’s full tide
- likes
- painting, violin, swimming, the sea
- dislikes
- sea cucumbers
- birthday
- march 6
- zodiac sun sign
Pisces- blood type
- O


Michiru Kaiou is a world-class violinist and a painter whose canvases sell, wealthy and always composed. Her family name, 海王 (Kaiou), is written “sea king”, and 海王星 (Kaiousei), the sea-king star, is the Japanese name of the planet Neptune. Her given name, みちる (Michiru), can mean to rise or grow full, as a tide rises to the flood. She loves Haruka, Sailor Uranus, and through her art what is coming reaches her first.
Under Michiru’s calm is a soldier as hard as Haruka. She accepted the mission first and drew Haruka in after her, and she will spend innocents, and herself, to guard the whole. Her talisman, the Deep Aqua Mirror, always shows the truth.
in modern astrology
significations
- compassion
- the other one’s trouble, landing as yoursThe warmest thing modern astrology gives Neptune, and it runs on the same softening everything else here does, turned toward another person. When the edge between you and someone else goes, their situation stops being information and starts being something felt.It shows up as reading a room before anyone has spoken, as being moved by a stranger’s trouble out of all proportion to one’s stake in it, and as the difficulty of putting down what was only ever picked up by accident.
- imagination
- fantasy, inspiration, the picture firstModern astrology hands Neptune the imagination and calls it the higher octave of Venus: art met by immersion rather than by judgement. Where Venus likes a thing, Neptune disappears into it.It shows up as music and image and reverie, and as the knack for picturing what is not there yet, which is the same faculty that makes a person easy to lead somewhere that does not exist.
- delusion
- confusion, and believing the pictureThe dark end of the modern list. An illusion is a likeness that convinces; delusion is the point where the likeness is taken for the thing itself. Confusion is the same failure in a milder form: with no edge between what is and what is wished for, there is nothing to check an impression against.It shows up as a wish or a fear mistaken for a fact, as a certainty that does not survive daylight, and as a fog a person cannot say when they entered.
- mysticism
- faith, and the self going quietJupiter is belief: doctrine, scripture, the institution, the law that can be stated and taught and argued over. Neptune is faith, which is the part that dissolves the structure. The moderns give it the mystic, the medium, and the vanishing of the self.It shows up as a practice that empties rather than fills, as devotion with no argument behind it, and as something that happened which the person afterwards cannot put into words and will not stop trying to.





trans-saturnian
Neptune isn’t one of the seven planets Hellenistic astrology reads. Those are the lights you can follow by eye, from the Moon out to Saturn, and they’re what two thousand years of that writing was about. Neptune was only found in 1846, so it was never in anyone’s sky while the tradition was being written.
Modern astrology gave it Pisces, Michiru’s own Sun sign, which the tradition gives to Jupiter. That is the pattern rather than the exception: the moderns didn’t find new meanings past the edge of the old sky so much as move meanings that already had an owner. This site reads the outer three as generational rather than personal, and leaves the rulerships where the tradition put them. When one of them does come to a placement, though, it is felt as hard as any of the seven.

powers and transformations
The Transformation WandHer transformation wand. In the anime she raises it and calls “Neptune Planet Power, Make Up”. In the manga’s Dream arc her power comes from her own Neptune Crystal instead, and the call becomes “Neptune Crystal Power, Make Up”.
The Deep Aqua MirrorOne of the three talismans, with Uranus’s Space Sword and Pluto’s Garnet Orb, and it always shows the truth. In the manga it’s her own hand mirror from the start. In the anime she only gets it when it comes out of her pure heart, which is when she’s revealed as a talisman bearer. Submarine Reflection is fired from it.
what she can do
She isn’t in this arc. Michiru’s first appearance in the classic anime is in Sailor Moon S.
She isn’t in this arc. Michiru’s first appearance in the classic anime is in Sailor Moon S.
- Neptune Planet Power, Make Uptransformation
- Deep Submergeattack
Her signature attack.
- Submarine Reflectionattack
Fired from the Deep Aqua Mirror.
She isn’t in this season of the anime.
- ▢Super Sailor Neptunetransformation
In episode 167 she’s given new power and the name Super Sailor Neptune.
- ▢Galactica Planet Attackattack
Wearing Galaxia’s bracelets, she and the other guardians Galaxia controls attack together.
variations
Labelled by source. The manga is the primary text here. The anime, Crystal and the live-action series are separate continuities that sometimes disagree, and where they do, this site argues from the manga.
-
manga
Sailor Neptune
Act 27, Infinity -
manga
Super Sailor Neptune
Dream arc -
manga
Eternal Sailor Neptune
Stars arc -
manga
Princess Neptune
Silver Millennium -
anime
Sailor Neptune
Sailor Moon S -
anime
Super Sailor Neptune
SuperS onward -
crystal
Sailor Neptune
Season 3 -
pgsm
does not appear
elsewhere
Crystal
Season 3 covers the Death Busters and follows the manga closely, designs included. Anyone who has read the Infinity arc will find very little here to surprise them, which is the point of Crystal.
the English dubs
Michiru becomes Michelle Kaioh. The Cloverway dub of Sailor Moon S rewrote her and Haruka as very close cousins to remove the relationship, and the result is a show in which two cousins act like a couple and nobody comments. The dub also gives her an ex-boyfriend called Mike in episode 107, who does not exist in Japanese.
Irwin released Outer Guardian dolls in 1998, ahead of the season airing in North America, and printed a third civilian name on the box, Nerissa. It is Greek for sea nymph and is also a character in The Merchant of Venice. The name appears nowhere else.
Sera Myu
Neptune has been in the musicals since the outer guardians entered the stage canon, and the stage versions keep the relationship intact.
live action
Pretty Guardian Sailor Moon, the 2003 live-action series, runs only through the Dark Kingdom arc. The outer guardians never appear, so there is no live-action Michiru.
in development
Takeuchi built Neptune and Uranus together, after the inner guardians were already established, as complementary opposites meant to work alongside Pluto from the start. Early concept art had both of them affiliated with the Takarazuka Revue, and Michiru wearing a bow in her hair at school. Neither idea was kept. The Materials Collection gives her kindness “as great as the sea”. Takeuchi has joked that the wave in her hair might be read as seaweed.
✦ junk drawer
things in here:0002
odds & ends. old graphics, for fun.


