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Kim Key Bum. The most nerdiest at his school time. Grown up as a scientist and has a secret crush to his best friend amber.

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Amber liu. Key's only bestfriend. Amber want's to be a baseball player but since she's in love with key, she follows him to become a scientist.

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Mr and Mrs Liu, amber's parents. Key's real parents not ambers.

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Onew, key's known father. Victoria liu's first love.

Co - Characters

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Choi Minho, The bully and the hot beast in key's school life in collage. Still inlove with his Ex, Krystal. And becames key's friend in the end.

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Krystal Jung, Minho's Ex girlfriend and the daughter of rich chairman of a private school. A Painter and key's and amber's friend.