Sora is a short, slender woman of pale complexion with black, messy hair. At all times, she wears a large metal collar with the Index's insignia that covers half of her face, with chains that connect to cuffs. As a Proxy of the Index, she dons the Finger's signature white cloak, with a white shirt with black sleeves, black tie and skirt, with black thigh high boots with golden heels. When she uses her Effloresced E.G.O active, the bound cuffs are temporarily gone while the Ego is active and her arms and legs are shrouded in shadows, having large clawed hands and feet. She also grows a long, thin tail with an arrow-like end, alongside a pair of horns and a halo and this gives her inhuman agility, strength and durability because it is a Ego Manifestation. Sora is a timid and insecure person, often worrying over how others perceive her. She has no friends due to her position within the House of Spiders and, as a result, craves companionship and validation from others. These factors characterize her as naive, a trait which also shows in her desire to please and become family with Rien, who clearly holds no genuine affection for her. Despite her cravings for companionship, Sora puts her loyalty to Rien and the Prescripts above all else, even if it entails killing the people she has grown fond of. Similarly, she remains a devout member of the Index even as the Prescripts guide her life in a direction where she remains alone and unable to befriend others. When her duties don't have to come into play, however, Sora demonstrates a kind and trusting heart that believes good people should be rewarded. She likes Ice cream, most of the time stutters and hesitates while talking, seems companionship and acknowledgement from Rien/Guest, and sometime can easily get scared to the pain and makes her into a crybaby.