Twoearle

トゥアール

She is a white-haired girl from another world that has been attacked by the "Ultimegil." Although she possesses a high level of scientific and technical knowledge, she is quite clumsy, often acting or speaking carelessly in ways that draw Aika's ire. She likes Souji very much and frequently flirts with him in a ridiculous manner, much to Aika's chagrin.
She later enrolled in Souji's school, where she became his classmate and adopted his last name, Mitsuka, under the pretense of being his cousin.