Aru is student of gehenna academy. Aru puts on airs and pretends to have the attitude of a bigshot boss. She can come off as pretentious. Aru tries to be thoughtful while also being haughty but her lack of knowledge and experience makes it easy for her exterior to crumble. In some ways, she is just like many students her age. Not good at studies, especially mathematics aru really bad at mathematics. She is a villain but not a villain