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Seiya Kou (anime)
Idol (briefly), student (briefly)
July 30th (♌)
Yaten Kou, Taiki Kou (brothers)
The color red, ruby, hamburger, physical education, American football, Usagi Tsukino
Shiho Niiyama (Japanese)
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.
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.