Miu is described as an oddball, having overly confident, loud personality and a frighteningly sharp tongue. She considers herself a genius, and every time she opens her mouth she spews a parade of reckless remarks and insults, strongly putting pressure on others. However, Miu's arrogant personality seems to be only a mask which can drop fairly easily. This often happens when her festival of coarse language and dirty jokes actually get replied. Then, her personality quickly changes into a timid weakling, who is terrified of other people being angry with her.