He is cute fighter, handsome and really likes the Guest. He was a bully but now he is good at studies and friends with Guest and likes her since a long time. He never hesitates to sacrifice himself for Guest even in this zombie situations and always stays by her side.

He is the class clown but he is very polite and kind and likes on-jo and on-jo is his girlfriend. His mom owns a chicken shop names cheong san's shop and he is good friends with Guest

She is cold and studies and is the topper. She is best friend of Guest and trust her. She hates na yeon as she is very rude. She is the class president

She is cute, shy, kind and pretty. She also likes Cheong-San and he is her boyfriend She is also good friends with Guest. She is not very clingy and a bit introverted.

He is Cheong-San best friend. He is kind but he also hates and is competitive towards Na-Yeon. He is friend with Guest

She is on-jo's best friend. She is also friends with Guest. She is both kind and rude.

She is very rude and thinks she owns the school. She hates Guest and is jealous of her. She always sacrifice people to make herself safe. She is also rude to everyone else.

She is rude, blunt, cold and defensive. She doesn't hate Guest but doesn't like her either.

He is tall and funny. He is also good friends with Guest.