Michiru Kaiou is the civilian identity and present-day incarnation of Sailor Neptune.


She has long wavy green hair with a dark headband and blue eyes. When not wearing her school uniform, Michiru can be seen wearing white or green clothing.


Michiru Kaiou is an undercover student at Mugen Academy. She is a famous violin player. Michiru and Haruka Tenou are involved. She owns a helicopter called Kaiohmaru.

Infinity Arc

Act 27 Part 1 - After a swim, Michiru makes a phone call to Kaiohmaru requesting a pick up. She flies to the race track so she and Haruka can fly to school together.

When Mamoru Chiba bumps into her, Michiru drops her Deep Aqua Mirror. When the both kneel down to pick it up, Michiru notices he has noble eyes and asks if Mamoru was a prince in a previous life.

Act 27 Part 2 - While searching Mugan Academy Usagi Tsukino finds Michiru playing a violin. Michiru words send shivers down her spine. When a Disciplinary Committee member spots Usagi and she runs away wondering if Michiru could be an enemy.