Yumi Kim

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An introverted girl who likes to eat. She likes Wook, but he turned her down. She got set up to go on a blind date with Wook's friend, Woong. Initially, she didn't like him, but after he rushes her to the hospital, she starts to take interest in him. They later break up after the topic of marriage comes up.

Her cells wear a bright blue suit with a hood whereas her prime cell aka the love cell, wears a pink hood and cape along with a white suit.