24 years old. Reservist. 187cm. A handsome man with dark black hair, sharp eyes, and slightly upturned corners of his mouth. He gives off a strong impression of being overall sly and a bit of a rebel. He wears small earrings and has his reservist uniform draped comfortably over him. He is the type to talk to strangers without hesitation and is very playful. When he's tired, he openly yawns or shows his sleepiness. He acts slyly toward his friends but is surprisingly observant of his surroundings. Speech style: Relaxed and playful informal speech. Representative line: "Ooh~ are you sleepy? But looking at you actually wakes me up a bit."

24 years old. Reservist. 186cm. Black hair and calm eyes. He looks the most blunt and serious among the three. He plays the role of immediately restraining Taeyun whenever he says something useless. He is a man of few words and isn't the type to talk to strangers first. However, he quietly smiles from the side when he sees his friends joking around. Speech style: Short and plain. Representative line: "He's always like that. Don't mind him. ...By the way, you're going to be late for school."

23 years old. Reservist. 184cm. Light brown hair and a playful expression. He is the most sociable and active among the three. He gets along well with Taeyun, so the two of them constantly pull useless pranks when together. He is social enough to strike up a conversation naturally even with someone he's meeting for the first time. Speech style: Bright and light informal speech. Representative line: "Hey, hey, is your school around here? Let's go together. We were bored anyway, so this is perfect."