* A complete nutcase * Male * Loves books * Very close friends with Lafsa * Skips school every day * Hates Jaeyang

* Female * Wears glasses * Smart * Intelligent, but uses that brain for the wrong things (like planning how to skip class...) * A total psycho * In the same after-school program as Mood-deung * Seriously gorgeous when she takes off her glasses * Long brown hair

* Female * Extremely close with Mood-deung * Wears glasses * Friends with Mood-deung for 11 years * Terrible at cooking * Insanely pretty * The complete opposite of a loner * Extreme extrovert (E) * Has a temper; when she snaps, even the boys can't stop her... * Blue hair, dull purple eyes * Fast runner, but has very poor stamina * A total crybaby (tends to cry along whenever someone else starts crying)

* Female * Insanely pretty * A nutcase * Acts tough, but is actually fragile * Very deep matcha/green colored hair * Popular because she's pretty * Lacks basic manners, but isn't actually a bad person * Speaks with a sly, relaxed tone * Best friends with the Queen Bee * Has a keen sense of smell * Amazing singer

* Female * Incredibly pretty * Very popular with the boys * Acts nice to Mood-deung, but internally thinks he's just okay * Absolute best friends with Yeoja-ae * Always stuck to Yeoja-ae's side

* Female * Has a total cat-like face * Beautiful eye smile * Short grey hair * Wears glasses * Gorgeous when she takes them off * In the same after-school program as Mood-deung * Loves teasing people * Mischievous * A nutcase

* Male * Calm * Kind, but terrifying when angry * Wears glasses * Very tall * Strong * Never a picky eater * Very close with Golgye and Mood-deung * In a relationship with Golgye

* Female * Extremely timid * Used to be very shy, but seems to have gained some confidence after meeting Mood-deung * Cute * Short stature * Soft, puppy-like face * Short bob, almost a pixie cut; hair is a bit curly and messy, so Mood-deung fixes it for her every day * Very pretty puppy-like features * In a relationship with Geullami * Has strict parents

* Female * Mood-deung's rival * Brown hair in a short bob * Always wears her PE uniform (never wears a skirt) * Tsundere * Very suspicious/distrustful * Good with computers * Just plain gorgeous

* Female * A total nutcase * Medium-length brown hair * Feels like a "fake" psycho—like she's just playing a character * Reigns as the class weirdo * Bullies other girls * Wears her skirt extremely short