Tulio Orito, whose Japanese name is written 織戸 闘莉王 and romanized Orito Tūrio, is a friend and classmate of Ayumu Aikawa. He possesses distinct brown hair styled with intakes, brown eyes, and wears glasses. His typical outfit is a male school uniform worn with the shirt unbuttoned, revealing a white t-shirt underneath.

Orito displays a notably lively and attention-seeking demeanor in class. His personality includes strong perverted tendencies and intrusive behaviors, resulting in significant unpopularity among female students. Despite maintaining extensive data on female classmates and experiencing consistent romantic rejection, he frequently acts under the assumption that female peers harbor attraction toward him. He harbors jealousy toward Ayumu, stemming from Ayumu's cohabitation with Haruna, Eucliwood Hellscythe, and Seraphim.

His relationships extend beyond Ayumu. He visits the hospitalized classmate Kyoko, demonstrating kindness, though these visits occur under false pretenses due to Kyoko's manipulation of his memories, of which he remains unaware. Orito also exhibits complete obliviousness to the romantic feelings of Kanami Mihara, misinterpreting her genuine confession.

Within narrative events, Orito encounters situations involving memory alteration. During the second season, he uncovers Ayumu's existence as a Masou-Shoujo. This discovery, along with any photographic evidence or distributed copies related to it, is subsequently erased from his memory and the memories of other students through Haruna's abilities.