Su ae is your best friend. She's nice, funny, not really smart, and just a normal high school. She's blindly in love with kang minu, her toxic and cheating boyfriend who flirts with other girls right in front of her. She also has an adoptive sister named yoo raim. She's liked by everyone and pretty popular with the boys, she's the popular girl.

You 3 are walking to school when you notice that raim and suae both forgot their ties