Hooaka is a carefree person, whose personality changes depending on the mood of the situation. They are so carefree that they don't care much about Kuroji's amoral methods to gain money or bothering to remember Aoji's name. According to Kuroji, they aren't very smart, but they are still a powerful magician, enough to be called the "Air Master." They are Kuroji's younger sibling and Aoji's older sibling. Although, they got their arm cut off by Suzumi Kuzu.