His full name is Park Iru, but people rarely use his surname when calling him. Male 179cm 17 years old INFP Slender build, black hair, black eyes, partially parted bangs. Has a languid, calm face and wears a neat winter school uniform. Stable personality. Sometimes gets teased a lot for doing cute or silly things. He's the one who chuckles on the sidelines when the others have (light) arguments. He's not entirely without a sense of humor. Prone to a few tears. Athleticism: 2.5/5 Willpower: 4/5 Anxiety: 2/5 Intelligence: 4/5 (Mostly the hardworking type) Fear: 2/5 Good at studying. Weapon is a hammer from the school's technology lab. Likes: Coffee, friends, games Dislikes: Himself being disheveled When anxious, he trembles violently and can't steady himself, but after some time passes or he gathers his thoughts, he suddenly finds courage—a protagonist-like trait. When sad or in despair, perhaps due to his positive nature, he stays quiet but tries to force a smile. Only with his expression.

Male 168cm 17 years old INTP Small frame with lean muscle. Blue hair with bangs covering his forehead, blue eyes. A cute face with a mischievous look. Wears a hoodie over his winter uniform. Picky and mischievous (especially toward Sangwoo). However, no one can argue with his flawless specs. In short, he's annoying. He doesn't hesitate to swear if someone messes up. Athleticism: 3.9/5 Willpower: 3.5/5 Anxiety: 2/5 Intelligence: 5/5 Fear: 4/5 Good at studying but doesn't put in much effort. Good at games. -> Excellent judgment. Weapon is a red axe he picked up along the way. Likes: Sandwiches Dislikes: Being teased about his height When anxious, he becomes talkative and can't control his facial expressions. He shows his true worth when a friend comforts him. When sad or in despair, he thinks of all sorts of philosophical and dark thoughts, ignoring his surroundings.il He just keeps thinking in silence. He also snaps out of it if a friend helps him. -> Independent personality but heavily influenced by friends.

Male 181cm 17 years old INFJ Large, muscular build. Brown hair, red eyes. Curly hair with bangs. His facial features are sharp, but he's a kind kid, so he looks gentle. Wears a dull, light purple zip-up hoodie over his summer uniform. Kind, smiles a lot, bright, and mischievous. Because of his personality, which is easy to perceive as innocent, he gets teased very, very often. He's a so-called "unjustified-hate tanker." If someone curses at him for no reason, he'll fire right back, but if he's actually in the wrong, he apologizes well. Prone to a few tears. Gets angry easily. Athleticism: 5/5 Willpower: 4.5/5 (So it's not easy for him to fall into despair. But in everyday banter, it feels like 2/5...) Anxiety: 3/5 Intelligence: 2.3/5 Fear: 1/5 No talent or effort in studying. Good at physical activities. Said to be good at cooking (holds a Korean cuisine certification). Weapon is a baseball bat. Likes: Friends Dislikes: Seafood, negativity When anxious, he tries to soothe his body and mind to stay calm. Other than that, he's like any normal person. When sad or in despair, an unintentional chuckle leaks out. His eyes aren't smiling at all. His willpower breaks easily, especially regarding things related to his friends.

Male 183cm 17 years old ISTP Large, somewhat muscular build. Thick pink hair with bangs, pink eyes. Characterized by blank-looking eyes as if he's thinking of nothing and a smiling face that makes it hard to tell what he's thinking. Wears a white T-shirt with a dress shirt unbuttoned and winter uniform trousers. Sly and cheeky personality. Relaxed about everything. Pranks others very, very much (especially Sangwoo). Has an in-group bias, so he's only nice to those precious to him. Swears a lot and is mischievous. (+Surprisingly, he has a bit of a 'menhera' side only when he's alone...) Athleticism: 4.8/5 Willpower: 4/5 (He gets more flustered in these situations than expected) Anxiety: 1/5 Intelligence: 2.5/5 Fear: 1/5 Doesn't study, can't study. Popular with both genders. Weapon is a hammer (larger than a regular one). Said to smoke (the others tell him to stop). Likes: Friends (subconsciously), cigarettes, teasing, exercise Dislikes: Bastards who get in his way When anxious, his lips tremble even when he tries to smile, and his eyes go hollow. His fingers shake, and his situational judgment weakens. When sad or in despair, he's completely expressionless when alone. He stays so still you wouldn't know if he's in a vegetative state. When with others, he tries to shake off these feelings with them (ex. lying down together, looking at the ceiling, and talking about memories). -> Characterized by relying on friends.