Age: 17 (Let's just say so) Gender: Male Birthday: January 20th Physical: 177.9cm, 67kg, Type AB Appearance: Puppy-like face, pink hair, red eyes, yellow bell necklace? Handsome and cute!! Traits: Physically weak, but has insane wits to deal with bullies or even beat the strongest student, Yeongjjang! (However, he uses those wits to skip night self-study sessions.) Family: Twin younger brother (Alleycat), parents, Gureumi (white dog) Personality: ENFP, active and extroverted. Socially he's an insider, but in reality, he's an outsider... Has a bit of a (?) crazy streak, pure-hearted, strong against the strong and kind to the weak. Other: Friends with Lafsa for 11 years and has been in the same school as Yeongjjang since elementary school. Hates insect corpses (is disgusted by them), has a fear of heights.

Age: 17 Gender: Male Birthday: January 20th Physical: 177cm, Type AB Appearance: Cat-like face, black hair, black eyes, dull eyes, extremely handsome!!! Traits: Unlike his twin brother Chwimudeung, he is strong. Called a 'mad dog' along with Lafsa due to his insane-... Family: Twin older brother Chwimudeung, parents, Gureumi (pet dog) Personality: INTP, realistic and introverted. However, he is popular, a tsundere, and strong against the weak and weak against the strong. Other: Called a 'mad dog' with Lafsa, friends with Lafsa for 11 years, twin brother of Chwimudeung. However, their personalities are polar opposites. Same school as Yeongjjang since elementary school.

Age: 17 Gender: Male Physical: 185cm Appearance: Cat-like face, navy-tinted black hair, navy eyes, always smiling, extremely handsome!!!;; Traits: Very strong. (Kicking a classroom door sends it flying and snaps it in half, can arm wrestle with one finger), says he can't hit people properly because he's afraid he'll kill them. A model student and good at studying.. Personality: Kind and gentle to the point of always smiling. (Even if someone hits him on the back of the head, he laughs it off), he's fine with being insulted himself, but gets very angry if others are insulted. Strong against the strong(?) Other: His grip strength as a high schooler exceeds 80kg... Same school as Chwimudeung and Alleycat since elementary school. Popular with girls because he's handsome and smart. Rarely gets angry. Weaknesses: Chwimudeung, weak animals (scared he'll crush them if he holds them in one hand), Gajeong-ssam (she's not just stronger than him, she makes him feel like a weakling, so he tries to run away whenever he sees her.)

Age: 35 Gender: Female Physical: 160cm Appearance: Looks gentle and chubby, but it's not fat, it's muscle... Whoa. Wears black horn-rimmed glasses! Has a cute appearance. Traits: Has a husband with a gentle impression who is 190cm tall. Insanely strong. (Beats Yeongjjang, splits a lectern in half by hitting it, and has a grip strength over 80kg even when applying 'slight' pressure.) Personality: Very high pride, cannot tolerate provocations! Other: Currently a Home Economics teacher, formerly a female soldier. Weaknesses: Giant hornets (got stung while trying to catch one during her military service and suffered greatly), motion sickness

Age: 17 Gender: Female Physical: 163cm Appearance: Brownish-black hair, always messy short hair, looks cute and gentle. Traits: Always looks dazed. Her name is said to be taken from 'Ogogye' (Silkie chicken). Personality: Very clumsy..!

Age: 17 Gender: Female Physical: 174cm Appearance: Sky-blue hair, long hair, purple eyes, very pretty!! Traits: Very bad at cooking... Called a 'mad dog' along with Alleycat due to her insane-.. .. Studied abroad during elementary school. Personality: Berserker-like personality; once she gets angry, even Chwimudeung can't stop her. Usually has a cool and fun personality. Other: Friends with Alleycat and Chwimudeung for 11 years. Rumors say she's good at English because she studied abroad. Her name 'Lafsa' means fox in Latvian. (Maybe that's why she likes foxes?)

Age: 30 Gender: Male Physical: 189cm Appearance: Beige-tinted black hair, black eyes, always a playful smile, handsome.. Traits: The teacher most similar to Chwimudeung in personality. Skips night self-study with Chwimudeung or secretly plays Nintendo in the PE storage room... (It might be fun to have a teacher like this..!) Personality: Playful and loves teasing people. Still, he does the bare minimum as a teacher!