Lucky Star: Lucky Star Online

Konata Izumi

泉こなた

Konata Izumi (泉 こなた Izumi Konata) is the main protagonist of the Lucky Star series and its spin off manga, Konata 31. A hardcore otaku, she is the unofficial leader of the Lucky Star crew and the daughter of Sojiro and Kanata Izumi. She lives with her father in the Saitama prefecture near Tokyo. Nicknamed "Kona-chan" by Tsukasa Hiiragi, she is an eccentric but friendly person.

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Kagami Hiiragi

柊かがみ

Kagami Hiiragi (柊 かがみ, Hiiragi Kagami) is one of the four main characters in Lucky Star. She is the older twin sister of Tsukasa Hiiragi, and she has good relationships with her friends, Konata Izumi and Miyuki Takara.

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Tsukasa Hiiragi

柊つかさ

Tsukasa Hiiragi (柊 つかさ, Hiiragi Tsukasa) is one of the four main characters of Lucky Star. She calls Konata Izumi "Kona-chan" and is the only one among all the Lucky Star characters who does that. She is the younger twin sister of Kagami Hiiragi, and is also a member of the Hiiragi family.

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Miyuki Takara

高良みゆき

She is the daughter of Yukari Takara and an unnamed man, and is the moe in the group and a stereotypical friendly "healing-type" meganekko (glasses- girl) character. Some say she's a saint.

Bio from Fandom, licensed CC BY-SA