Born in Osaka, Aya Ota began her ballet training at Homura Tomoi ballet school in Osaka. She was trained in Vaganova. Her teachers were Makio Homura, Toyoko Miyamoto, and Emiko Inoue. During that time she attended The School of Kirov Ballet Vaganova Ballet Academy. While there she studied Classical Ballet with Zagurskaya Margarita, Character dance with Averkina Larissa, Historical Dance with Apadiakos Natalya, and Mime with Stiopio Alexander.
She has also studied in RAD, Royal Academy of Dance, and has received high marks in Elementary, Intermediate, and Advance 1 exams. She has attended the London Studio Centre and studied under teachers Barry McGrath, Margaret Barbieri, Anita Yang, Jane Sang, Sue Booker, and others.
After Graduating from the London Studio Centre, Aya returned to Japan and joined Ballet Chambre Ouest in Hachioji Tokyo, under the direction of Hiroaki Imamura. Over her 16 years at Ballet Chambre Ouest, Aya danced Principal and soloist roles in many classical ballets and original works. Her repertoire consists of lead roles in The Nutcracker, Cinderella, Le Corsaire, Thumbelina, Gisselle, Swan Lake, Raymonda,Tenjyo no uta, Pas de deux from Donizetti, Fairy tale, and Luna. She has also performed at the Bolshoi Theatre with Ballet Chambre Ouest.
For the past 15 years Aya has been teaching ballet technique, pointe, variations, and pas de deux. Many of her students received 1st place, 5th place, and finalist in competitions such as, Educational Ballet competition, YAGP in Japan, Japan Dance Competition, Japan competition in Hachioji, Japan Grand Prix, and the All Japan Competition.