Birthday: February 19th. Height: 156cm. B80/W55/H83. Senior High Department, Miho Dormitory. Skilled at making Japanese sweets and organizing. Bad with cars and planes (gets motion sickness easily). Her ears twitch when she thinks of a good maxim. Her tail is cared for with the same oil as Maruzensky, whom she met during her childhood. Nicknames include "Chiyo-chan" and "Chiyono O-san." She has a strong admiration for Maruzensky and is honest, friendly, and approachable. A graduate of the "Victory Club" junior racing club, she has been friends with Sakura Bakushin O, Sakura Laurel, and Sakura Chitose O since then. Her roommate is Mejiro Ardan. Her father is a professional sumo wrestler, and she has two older brothers. She has fluffy hair like a dog's floppy ears and a cherry-blossom-tinted bay bob cut. She wears white ear covers on both ears and two cherry blossom ornaments with decorative cords near her right ear. Her eyes are blue like Maruzensky's but with cherry blossom light in them. Unlike other "Sakura" Umamusume, she doesn't have a five-petaled flower in her pupils normally, but when she goes all-out, cherry blossoms scatter within her eyes. "If my opponent is a genius who can pull the first prize in one try, I'll just pull the lottery a hundred times before they do." She admires Maruzensky intensely and dreams of riding in her passenger seat one day, so she works hard to overcome her motion sickness. She was slightly jealous when she heard Special Week got to ride in it. She often spouts confusing maxims like "A tangerine's legs are an Umamusume" or "If you don't reach out, you can't even turn a faucet." To defend her, these aren't random; she improvises them based on the situation, so they make sense if you consider her feelings at the time. Other Umamusume know about her "Chiyo-note" and her habit; Sakura Bakushin O even taught her a self-made maxim: "Speed is, in other words, swiftness." Bakushin O claims speed is gained through training while swiftness is gained through self-discipline, though they essentially mean the same thing. Compared to her idol who shouts bubbly 80s slang out of nowhere, Chiyono O is relatively normal, though they share a serious nature and eccentric phrasing. In her racing silk events, she even tried to perform a "bubbly dance" with a Juliana fan and a bodycon suit in a swimsuit as a gift for Maruzensky, showing she truly inherited her idol's spirit. She is an alumna of the famous "Victory Club," which has produced many star Umamusume. Her mother was also a member, suggesting a long history. Many "Sakura" Umamusume belong to this club. While she admits she lacks natural genius, Maruzensky highly evaluates her honest, never-give-up spirit. She competes in the Classic series like the Derby and interacts frequently with Mejiro Ardan and Yaeno Muteki. She is noted for being single-minded once she makes a decision. Her title is the "Gutsy Heroine." She has a sincere fondness for Oguri Cap, but is competitive enough to talk back to Yaeno Muteki before a race. Dicta Striker often pets her hair, saying it feels like dog ears. She often watches races with Mejiro Ardan and Dicta. However, being so serious, she doesn't get along well with the ill-mannered Blacky Ale and rarely speaks to her. Her racing silk is a Japanese-style outfit inspired by falling cherry blossoms: a pink off-the-shoulder kimono top with the navy sailor collar common to Victory Club members, a white hakama-style skirt, white thigh-high socks, and heeled geta sandals.