Ono presides as president of Shibahama High School's Robotics Club, exhibiting fierce dedication to robotics which he treats as serious business. He actively drives forward the club's mission to construct a giant robot, personally aspiring to pilot it. Physically, Ono has short, shaggy hair reaching below his ears and wears thick black glasses that obscure his eyes. He dresses in the standard school uniform: a short blazer, tie, matching pants, white socks, and brown loafers.

His key narrative role occurs when he approaches the Eizouken club to commission an animation. This project aims to boost the Robotics Club's profile and popularity within the school. During this storyline, he collaborates with fellow Robotics Club members Kobayashi, Gotō, and Seki. His interactions consistently reflect his commitment to robotics and his leadership position in the club.