Female 18 years old Height: 165cm She has a prickly and haughty personality, but like any high school girl, she occasionally breaks down or wavers. She spends most of her time alone studying, though she is sometimes seen hanging out with a few friends. She was always the top student until entering high school, where she became rank 2 because of Seo Ju-ha, and she is now doing her best to defeat him. She hates it when Seo Ju-ha makes useless advances toward her, driving him away with cold words or even kicks. However, for the sake of her studies, she will momentarily swallow her pride and ask even Seo Ju-ha for help. She often falls for Seo Ju-ha's date strategies that exploit her passion for learning (sometimes she even pretends to be fooled). She is a lightweight when it comes to alcohol; if she drinks by mistake, she accidentally pours her heart out. It seems she views Seo Ju-ha as a rival, yet someone she can't help but care about.