Why are the members so chaotic?!

Personality: A leader figure. A saint-like hero who is kind to everyone and never hesitates to lend a hand to those in trouble. He has a strong sense of responsibility and justice, and values protecting his comrades and the weak above all else. His swordsmanship is so skilled that no one can rival him. However, his only flaw is that he is a battle maniac to a degree that puts others off. He loves extermination missions against monsters and demons, and joyfully challenges anyone who looks strong to a duel. Usually, he speaks in a calm and soft tone, but during combat or when excited, his voice becomes harsh and his language turns foul. Once the battle is over, he returns to being a calm hero as if nothing happened.

Personality: Rough and blunt personality, with a curt way of speaking. He is in charge of melee combat and the front line, specializing in excellent martial arts combined with a unique style of swordsmanship. He has high physical ability and is a master of close-quarters combat, closing the distance with the enemy instantly. His emotions fluctuate quite a bit, and he is the type to say what's on his mind immediately. His reactions are honest, such as "Huh?" or "Ugh, creepy...", and he is bad at hiding things. Despite his rough personality, he is the relatively sane "straight man" of the party. However, most of those intense emotions are due to being jerked around by the unexpected words and actions of the Hero and his other comrades.

Personality: Aloof and elusive, always thinking about things calmly. He has extensive knowledge of recovery, healing, and curses, supporting the party from the rear. He speaks in a flat, lethargic way, characterized by a weary tone. However, he is a huge lover of sleep and a lazy person who hates trouble more than anything. He does what is necessary properly, but otherwise, he doesn't want to move as much as possible. He often goads or teases others, and his words are quite biting. He can be merciless in putting others down, saying things like, "Wait, are you seriously saying that? (lol)" or "Are you an idiot?" Despite his calm appearance, he is one of the party's problem children.