WIP Picture The following article is currently being improved for the benefit of all visitors. Pages carrying this template may contain issues which will be fixed as soon as an editor is available to do so. Please bear with us while improvements are being made. Therefore we request visitors to give editors time and patience to work on the page and assume good faith until the edits are complete. We apologize for the inconvenience this may cause in the meantime.

Please be aware that pages which are not given such a chance before this template is removed will be protected until an experienced editor is available to work on the page.

Seiya Kou (anime)
星野 光
Seiya Kō
Seiya star
Full Name

Seiya Kou



Resides in

Tokyo, Japan (briefly)


Idol (briefly), student (briefly)


Sailor Star Fighter


Yaten Kou, Taiki Kou, Princess Kakyuu, Usagi Tsukino


July 30th ()






Female (Disguises as male)


Kinmoku humanoid

Blood Type





The color red, ruby, hamburger, physical education, American football, Usagi Tsukino



First Appearance

A Goodbye and an Encounter! The Destiny of Flowing Stars


Shiho Niiyama (Japanese)

Related Pages

Manga Bio
Sera Myu Bio

"I wish I could've met you sooner, Odango..."
— Seiya's words to Usagi before the Three Lights final concert in episode 195

Seiya Kou is one of the members of the Three Lights idol group, and is the civilian identity of Sailor Star Fighter. This is the first animated depiction of the original manga character.


Seiya is a student at Juuban Municipal High School, and the lead singer of the Three Lights.

Seiya's personality was considerably lighter than that of the other two Starlights. He was much more childlike in his attitude, with a slightly prankish edge to his character, and there were brief moments when he was not thinking about his mission. He had a cheerful disposition and was much more easygoing. He was also more willing to become close to Usagi and her friends, while the other two Starlights mainly kept to themselves and originally refused to work with the Solar System Senshi at all. As mentioned by Taiki and Yaten, Seiya is also a sore loser.


Seiya has blue eyes and long, hip-length raven hair that he keeps tied in a low ponytail with fringes in each sides.

He wears a standard Azabu Juuban Municipal High School uniform.

As the lead singer of the Three Lights and as his main appearance, Seiya wears a red formal suit jacket with a blue long sleeved button-up shirt with a yellow neck tie on the collar, white formal pants and black shoes.


Sailor Moon Sailor Stars

Seiya is first seen walking past Mamoru and Usagi, who are on their way to the airport. His attention is caught by Usagi, but then he walks away. He later sees Usagi in a shooting location and recognizes her when she was trying to get a good look at what's happening.

Seiya becomes more close to Usagi after the Three Lights joined her school. Over the course of the season's events, Seiya falls in love with Usagi. However, he is severely reprimanded by Taiki and Yaten, when he went as far as to risk his life for her. He becomes disturbed when he comes to know that Usagi has a boyfriend, however, after coming to know that Mamoru is overseas in America, he believes he has a chance with her. He often calls her Odango affectionately, just as Mamoru does.


  • In the first anime series, Seiya has one image song: The One-Sided Love as Far Apart as the Galaxy.
  • His hairstyle and appearance is a mixture of Mamoru Chiba and Haruka Tenou.
  • He is seen blushing the most of the Three Lights.
  • Since it was not dubbed in the original DiC and Cloverway English dub, some fans made an English fan dub for Sailor Stars until in Episode 174 where Seiya has now been voiced by a female voice actress to match up the late Shiho Niiyama's performance in the Japanese dub as he calls Usagi a "meatball head" instead of calling her "odango".


Seiya anime
Seiya wearing sunglasses
Star Fighter
Seiya and Sailor Star Fighter
Sailor Starlights and the Three Lights
The Three Lights and the Sailor Starlights
SMSS 176 (1)
Three Lights Card
SMSS 174 (4)
SMSS 174 (5)
SMSS 181 (infobox)
SMSS 184 (infobox)
Seiya after getting caked by ChibiChibi
Seiya Kou 2
Sailor Senshi

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