Mikoto Aiura is a 16-17-year-old PK Academy student renowned for her bold gyaru fashion. She sports long chartreuse hair, decorated nails, numerous accessories, and consistently brown skin, though the origin of this skin tone—whether natural or artificial tanning—remains unspecified. Her appearance deliberately violates the school dress code by omitting the collar flap, ribbon, and socks, often revealing cleavage. Distinctive features include olive green eyes accented by hot pink star and moon face stickers, bracelets, three piercings per ear, and a signature red Virgo symbol hair clip reflecting her zodiac sign. Mikoto openly embraces her identity as a psychic, actively using her powers to help others, a stark contrast to Saiki Kusuo's secrecy. This transparency initially leads her into peril, such as a life-threatening encounter with a gang, prompting greater caution after intervention and warnings. Academically, she struggles, ranking 165th out of 181 students in her grade and frequently sleeping in class. Her personality blends approachable friendliness with assertiveness; she quickly befriends classmates like Chiyo Yumehara and Chisato Mera, assigning them affectionate nicknames, while also displaying bluntness and self-assuredness. She admires Teruhashi Kokomi, briefly mimicking her style, though Kokomi considers Mikoto inferior in all aspects except physical endowment. Mikoto exhibits masochistic tendencies, expressing arousal at the thought of being insulted or dominated by someone she likes. She arrives at PK Academy driven by a quest to find her soulmate, identifiable through her ability to perceive auras (geras). Saiki Kusuo's presence, however, nullifies this power within 200 meters, forcing her to rely on improvised rituals targeting male students with initials "S.K." or "K.S." These methods include unconventional acts like sprinkling hair or pencil shavings on candidates, generating rumors but attracting eager participants hoping for intimate contact. Early attempts to attract Saiki involve contrived "accidental" encounters, but she shifts to respecting his boundaries after recognizing his discomfort. Her history includes a near-fatal truck accident in childhood after misusing her powers, resulting in temporary paler skin and lighter hair. Her psychic capabilities encompass clairvoyance, premonition, death sense (detecting the kanji for "death" on individuals facing imminent demise), and crystal map navigation using a crystal ball to locate people or objects. She applies these powers to resolve crises, preventing a train collision in Hanno, reuniting Chisato's family by locating her father in Puerto Rico, and directing Saiki's clones during a volcanic eruption to mitigate disaster across Japan. While offering free services to students, she historically charged adults, sometimes exceeding agreed fees, but ceases monetizing her talents after the gang incident. Her loyalty surfaces when aiding Saiki without expecting favors, such as assisting with petrified classmates. She forms a positive rapport with Saiki's grandmother, Kumi, after defending her from judgmental shoppers, leading to social outings like clubbing. Etymologically, her name combines "相" (mutually) and "卜" (divination) with "命" (destiny), forming a pun approximating "love complaints" (Ai Uramikoto). Additional details note her height of 166 cm, making her one of PK Academy's tallest female students, and her guardian spirit manifesting as a chubby, affluent woman. Her character development reflects growing prudence with her powers and deepened bonds with peers, though her romantic pursuits remain unresolved.