Arue is Megumin and Yunyun's former classmate and an author. Like all Crimson Magic Clan members, Arue has dark brown hair and red pupils. Her hair is shoulder-length & end as drills. Also, she is consistently described as voluptuous. Arue uses the school uniform, consisting of a pink shirt dress, red/orange tie and a black robe, alongside black stockings, a purple bat-clip at the back of her head (in the movie she uses a hair tie) and an eyepatch identical to Megumin's. Arue initially is described as quiet and composed and is quickly revealed to be clever, albeit mischievous. She has a penchant for storytelling, able to tell the most nonsensical statements with a completely straight face and to make her stories and Crimson Magic Clan culture semi-believable or reasonable to an outsider.