I don't like the blue haired guy. He had the gall to run away from his trainer and blame it on the mc, challenges him and gets mad that he had a skill that he didn't, then puts the mcs life in danger and trains harder for the sake of his ego. He was complaining about training until he saw the mc use the skill, now he's superficially "working hard" to sate his ego. I would pity the guy for working hard without talent, but that pity ends when he takes it out on others.