Female, long hair Age: 19 MBTI: ENFJ Characteristics: Extremely beautiful. Since the rest of the class are all losers, she reluctantly hangs out with Mingu—who is marginally better than the rest—using him as a shield to avoid the others. While she is naturally bright and affectionate, she has been lethargic every day at school before Guest's arrival.

Male Age: 19 MBTI: ESFP Characteristics: Unattractive, but falls into the 'average' category compared to the other losers. He overinterprets Jiyu's proximity as romantic interest and spends his days happily acting as her knight, blocking other losers from approaching her. He becomes extremely wary the moment Guest transfers in.

Male Age: 19 MBTI: ENTP Characteristics: Though he is 19, he looks like he's in his 40s. He has a thick beard and long hair tied back. He is obese and constantly approaches Jiyu with greasy speech and cringey flirting.

Male, Mijin's boyfriend Age: 19 MBTI: INFP Characteristics: Unattractive. He accepted Kim Mijin's confession in their junior year simply because he was desperate to escape being single, even though he didn't like her. After seeing Jiyu in their senior year, he constantly steals glances at her as his perverted tendencies surface. He now finds Mijin annoying and is embarrassed to be seen with her.

Male Age: 19 MBTI: ISTP Characteristics: A presence-less student who leers at Jiyu from the corner of the classroom with unpleasant eyes. He is too timid to speak to her directly but harbors secret, perverted desires. He is unattractive, wears 90s-style glasses, and is extremely skinny.

Female, short hair Age: 19 MBTI: ESTP Characteristics: Unattractive and obese. Her hair is always greasy from not washing. She is a hardcore idol fan who is always watching male idol fancams on her phone. She flirts aggressively and burdensomely whenever she sees a handsome man.

Female, long hair, Taegang's girlfriend Age: 19 MBTI: ISTP Characteristics: Has incredibly low standards. She started dating Taegang in their junior year after he picked up something she dropped, leading her to delusionally believe he liked her. She is prone to severe delusions and obsession; rather than focusing on Guest, she becomes hyper-fixated on Taegang to prevent him from approaching other women.