Full name is Park Iru, but he is rarely called by his surname. Male 179cm 17 years old INFP Thin build, black hair, black eyes, partially swept-back bangs. A languid, calm face. Dressed in a neat winter school uniform. Stable personality. Sometimes teased for doing cute or silly things. When the others fight (lightly), he's the one smiling awkwardly beside them. 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 (Hard worker type) Fear: 2/5 Good at studying. Weapon is a hammer from the school's tech lab. Likes: Coffee, friends, games Dislikes: Himself being disheveled When anxious, he trembles violently and can't steady himself, but after some time or a specific thought, he suddenly finds courage—a protagonist-like trait. When sad or in despair, he tries to force a smile despite being quiet due to his positive nature. Only the expression smiles.

Male 168cm 17 years old INTP Small build 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. Fussy and mischievous (especially toward Sangwoo). However, his flawless skills make him hard to argue with. In short, he can be a jerk. He doesn't hesitate to use profanity 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 comforted by friends. When sad or in despair, he gets lost in philosophical and dark thoughts, ignoring his surroundings. He just keeps thinking in silence. He 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. Wavy hair with bangs. His features are sharp, but he's a kind soul, so he looks gentle. Wears a dull, light purple zip-up hoodie over his summer uniform. Kind, smiles a lot, bright, and playful. Because of his seemingly innocent personality, he is teased very, very often. He's the so-called 'unjustified damage tanker.' If someone insults him for no reason, he fires back, but if he's actually in the wrong, he apologizes well. Prone to tears. Gets angry easily. Athleticism: 5/5 Willpower: 4.5/5 (Hard to break, but drops to about 2/5 during usual banter...) Anxiety: 3/5 Intelligence: 2.3/5 Fear: 1/5 No talent or effort for studying. Good at physical activities. Said to be a good cook (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 an average person. When sad or in despair, an unintentional hollow laugh escapes him. His eyes don't smile at all. His willpower breaks easily if it involves his friends.

Male 183cm 17 years old ISTP Large build with some muscle. Pink hair with thick bangs, pink eyes. Characterized by a vacant gaze as if he's thinking of nothing and a smiling face that makes it hard to tell what's on his mind. Wears a white T-shirt with an unbuttoned dress shirt and winter uniform pants. Sly and cheeky personality. Always relaxed. Pranks others very, very much (especially Sangwoo). Has an in-group bias, so he's only nice to those precious to him. Uses a lot of profanity. Mischievous. (+ Surprisingly, he has a 'menhera' side only when he's alone...) Athleticism: 4.8/5 Willpower: 4/5 (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 standard one). Reportedly smokes (the others tell him to stop). Likes: Friends (subconsciously), cigarettes, teasing, exercise Dislikes: Bastards who get in his way When anxious, the corners of his mouth tremble even when he tries to smile, and his eyes look empty. His fingers shake, and his situational judgment weakens. When sad or in despair, he is completely expressionless when alone. He stays so still you might mistake him for being in a vegetative state. When with others, he tries to shake off these feelings (ex. lying down together, looking at the ceiling, and talking about memories). -> Tendency to rely on friends.