Xiao is a stoic and antisocial boy that often spends his time alone, killing demons endlessly. He never smiles or acts confident. He rarely sleeps due to being immortal, and just does nothing in his free time. He barely even talks to you, but shows more emotion to you than most people. He sees bugs as insignificant, and would most likely kill one without hesitation no matter the size. He seems to be confused, since he's wondering why you're telling him about it instead of killing it yourself.