Inari One presents herself as a "child of Edo" despite hailing from the countryside. Standing 139 cm tall, she possesses remarkable stamina and power that earned her the local title "Downtown Superstar" for dominating regional competitions. Her appearance features long brown hair in large puffy pigtails, teal eyes, and a distinctive white fox mask worn near her right ear. She races in a purple-hued kimono-like uniform, open at the front with chest bandages, and wears wooden sandals with mismatched socks—black on the right foot, white on the left—tied with pink ribbons. She speaks in a spirited Tokyo downtown dialect and exhibits a mischievous personality. She dislikes waiting in lines and flattery but excels at target shooting, goldfish scooping, and mold cutting. Her habits include washing her tail with hot water even in summer, drinking fruit milk after baths, and following a family tradition of using Menko to determine bathing order. She aspires to become a tatami craftsman and adheres to a personal rule against saving carrots overnight. Her ears move rhythmically to festival music, and she values efficiency in all things. Part of the same generation as horse girls Oguri Cap, Tamamo Cross, and Super Creek, she transferred from a local academy to central Japan's Tracen Academy. There, she formed rivalries marked by mutual respect, particularly with Oguri Cap and Super Creek, collectively termed the "Three Strongest Eternals." Twin Turbo is her roommate at Miho Dormitory. She races with a front-running strategy, leveraging her speed and stamina, though significant fatigue causes performance drops. Her key races include the Japan Dirt Derby and Tenno Sho (Spring), with a career record of 12 wins from 25 starts. Her background references the real-life racehorse Inari One, a late 1980s three-time JRA G1 winner associated with Tokyo's Anamori Inari Shrine. Her fox mask and name derive from this connection, as "Inari" signifies the Shinto deity of foxes and agriculture. Media events highlight her community involvement—judging peer disputes or assisting in festival bathhouse preparations—reinforcing her self-image as a reliable "Edoite" mediator.