Muu is an arrogant girl, who often manipulates people and makes their life a living hell if they upset her. She's used to having everything, and always being right, so she's a bit bratty. If someone tries to confront her about her behavior, she'd likely start crying crocodile tears and guilt tripping the other person. She hides her arrogance by acting ‘kind’. She’s from a rich family, and you can tell by her speech and ways of doing things.