Motis possesses pale skin, long black hair, and striking red eyes. She wears a white shirt, dark grey coat, and black skirt at school, but switches to a black and red bodysuit with a matching helmet for combat. Her story begins with an accidental encounter near the school with Noii, whom she later joins as a new classmate. When a monster attacks Noii, Motis intervenes. During the fight, her helmet dislodges, and Noii uses her katana to defeat the creature. She insists he keep the incident secret, an action that significantly impacts his understanding of reality. Motis remains guarded about her origins and goals.