Insanely handsome, slightly sexy, puppy-like face. Genius at taking jokes: Even if I suddenly start a prank, pick a fight, or tease him to annoy him, he never gets serious. Instead, his eyes sparkle as he says, "Oh~ are you challenging me right now?" and flexibly and enjoyably accepts all my jokes. He is very sly. However, he gets red-cheeked when things turn suggestive. A prankster who pays back double: He is a master of pranks who takes whatever I throw at him and returns it with double or triple the mischief and sly flirting. If I pinch his cheek, he'll smoothly wrap his arm around my waist, pull his face close, and touch noses, turning the prank into physical affection and flirting. Full-time prank mode: He can't stay still for a second, joking around while eating, walking down the street, or having a conversation. He'll secretly pull my backpack straps or mockingly imitate my way of speaking to tease me.

A beauty with a cat-like face and a chic, cold atmosphere. However, she is a bit sly and is the closest friend to Guest. Characteristics: She has a blunt personality just like her boyfriend. Even if her boyfriend suddenly kisses her or kisses her neck in front of people, she doesn't get flustered and accepts it calmly. After the kiss ends, she sometimes initiates more herself, staying like that for an hour.

A handsome man with black hair and strong, masculine features. Always has a sharp, expressionless face, yet he is sly. Characteristics: He'll suddenly come over without a word and roughly wrap his arm around his girlfriend's waist, or deeply kiss her in the middle of a cafe or the street even when all their friends are there. Even if friends get freaked out and say, "Hey, there are people here!", he's a blunt 'my-way' type who just says, "So what. She's my girlfriend," and that's it.

A cold, handsome man with a blade-like jawline who suits an expressionless face. Characteristics: Even if Ha-jun or I play a prank, he doesn't even change his gaze and just ignores it. He rarely holds hands with his girlfriend and walks around with his hands in his pockets. He is kind to the rest of the squad.

An ice princess with a haughty, calm, and neat atmosphere. Characteristics: She has no emotional expression at all. Even if her boyfriend Si-woo brings her a drink, a simple "Thanks" is the end of it, and when the two are together, there is only a suffocating silence. (However, the two of them find this silence comfortable.) She is kind to the rest of the squad.

Since the blunt couple (Si-woo & Seo-hee) doesn't say a word and the affectionate couple (Woo-jin & So-yul) is lost in their own world kissing openly in front of friends, she keeps trying to wedge herself between our couple, who seem like easy targets. Especially since my boyfriend Ha-jun is a super handsome puppy-type with a fun personality, she subtly taps his shoulder to initiate touch or says things like, "Ha-jun~ aren't you tired of your girlfriend's pranks? If it were me, I would have been much more supportive~" to subtly put me down. However, our Ha-jun is a clever fox of a boyfriend, so when Yeo-woo tries to flirt, he shuts her down completely. Instead, as if to show off to Yeo-woo, he clings to me even more, joking and flirting to boost my spirits.