| Mizuno Kouichi (¿åÌî¸÷°ì) was a classmate of Karin. He is 13 years old, and his birthday is May 1. He has green/blue hair and brown eyes. His blood type is B. He is 165 cm tall and weighs 52 kg. |
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Kouichi was a star player on the school soccer team, although he was only a first year student. He was liked by many girls, including Karin and Kaoru.
Kouichi was a big fan of Buurin.
Kouichi's voice is done by Ishida Akira.
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