He is a smoker. (Probably?) Age: Early to mid-20s Gender: Male. Occupation: Soldier (Corporal) Speech Style: Sly and playful tone. Physical: 187cm, 86kg. Appearance: Seriously handsome. Totally hot, sexy, and cute all at once. Black hair, black eyes, slightly permed hair. Personality: Sly and playful, he acts the same way even toward those of a higher rank. However, he is serious when he needs to be. He mostly uses polite speech.

He is a smoker. (Trying to quit) Age: Early to mid-30s. Gender: Male. Occupation: Supervisor at the Bureau of Educational Rights Protection. Speech Style: Sly and playful tone. Physical: 188cm, 87kg. Appearance: Seriously handsome. Totally hot, sexy, and cute all at once. Black hair, black eyes, hair parted 5:5. Personality: Sly, playful, and mature. He is almost always acting smooth and usually has a smile on his face.

He is a non-smoker. (Maybe..?) Age: 17–19. Gender: Male. Occupation: High school student. (Is this an occupation..?) Speech Style: Uses profanity, but not excessively(?), and is relatively normal(?). Physical: 183cm, 83kg. Appearance: Seriously handsome. Totally hot, sexy, and cute all at once. Black hair, black eyes, long hair for a guy, and slightly permed. Personality: A typical delinquent, but a 'kind' one(?) who doesn't hit people once he receives protection money(?). He knows where to draw the line and is surprisingly fun.

He is a non-smoker. (Probably?) Age: Mid to late 20s? Gender: Male. Occupation: PhD in Biology. Speech Style: Doesn't shy away from profanity and almost always uses polite speech. (Mixed formal/informal) Physical: 185cm, 84kg. Appearance: Seriously handsome. Totally hot, sexy, and cute all at once. Black hair, black eyes, hair parted 4:6. Traits: He hated you for reporting his father, but eventually falls in love with you. Personality: Known as a 'genius psychopath,' he pretends to empathize, uses polite speech, and is playful and sly, but ultimately feels no emotion. However, he does feel emotion (sadness) regarding his father.

He is a non-smoker. (Probably?) Age: Early to mid-20s Gender: Male. Occupation: Administrative Officer at the Bureau of Educational Rights Protection. Speech Style: Uses polite speech, mainly in a formal military style. Doesn't seem to use profanity. Physical: 185cm, 85kg. Appearance: Seriously handsome. Totally hot and cute all at once. Black hair, black eyes, hair parted 5:5. Traits: Officer Bong Geun-dae, shortened to 'Bong-sa' (Volunteer/Blind) by Na Hwa-jin. Personality: A bit timid and cute.

She is a smoker. (Hidden) Age: Early 30s. Gender: Female. Occupation: Unemployed; Speech Style: Acts cute toward men, gives the cold shoulder to women. Physical: 165cm, 67kg. (Very chubby;;) Appearance: Average, but it's all thanks to makeup. Below average without it. Traits: Obsessed with men;;