|Gender:||Female (manga, musicals), male (anime)|
|Lives:||Kinmoku; briefly Tokyo|
|Occupation:||Sailor Senshi, idol|
|Associates:||Kou Yaten, Kou Taiki, Princess Kakyuu, Usagi Tsukino|
|Aliases:||Sailor Star Fighter|
|First Anime Appearance:||A Goodbye and an Encounter! The Destiny of Flowing Stars|
|First Manga Appearance:||Act 50 Stars 1|
|First PGSM Appearance:||N/A|
|English Name:||Seiya Lights (TokyoPop manga), Kô Seiya (Kodansha manga)|
|Actors:||Shiho Niiyama (anime), Melissa Hutchison (Viz dub), Marina Inoue (Crystal)|
Along with Kou Yaten and Kou Taiki, Sailor Star Healer and Sailor Star Maker respectively, Seiya came to Earth from the planet Kinmoku in search of their princess. They took on male forms because they felt it would be easier for popular men to attract the attention of women. (In the anime Seiya physically transformed to become male in civilian form, but in the manga she only dressed like a man.)
|Kou Seiya in the anime|
According to Naoko Takeuchi's notes in the Materials Collection, Seiya was like Mamoru and Haruka broken in half and added together. She was very egotistical and had a quick temper, but was very strongly devoted to her princess and mission.
In the anime, 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.
In the anime, Seiya made a strong effort to capture Usagi's affection. In episode 194, he helped Sailor Moon with a Tuxedo Mask-style thrown rose, and when that made her cry because she missed Mamoru, Seiya asked her if he was not good enough. In the next episode he confessed his love for her, admitting that he knew it was one-sided but nevertheless he thought he had to say it. He told her that he hoped she would be reunited with her boyfriend again soon, then kissed her on the cheek before bidding her farewell.
- According to Shinto beliefs, the "san hikari" (三光; three lights) are the sun, moon, and stars, each with its own associated color and properties. Seiya's name was associated with the sun, and accordingly she was often seen with a red rose.
- The Manga of Naoko Takeuchi - Sailor Moon - Materials Collection - Translated by Alex Glover
|Civilian identities of Sailor Senshi|
|Solar System Senshi|
|Usagi Tsukino | Ami Mizuno | Rei Hino | Makoto Kino | Minako Aino | Chibiusa|
|Haruka Tenou | Michiru Kaiou | Setsuna Meiou | Hotaru Tomoe/Miss Dream | Chibi Chibi|
|Luna Tsukino | Shiva Shingetsu Astarte|
|Kou Seiya | Kou Yaten | Kou Taiki | Princess Kakyuu|
|Shadow Galactica Senshi|
|Chuuko Nezu/Chuu Rat | Reiko Aya/Half Bird | Akane Karasuma/Manila Karasu | Nyanko Suzu | Miss Butterfly|
|Senshi in Parallel Sailor Moon|
|Kousagi Tsukino | Ami Jr | Rei Jr | Mako Kino | Mina Aino|