Career
Born in Yokosuka, next to a satellite city of Yokohama. Ono joined Yokohama F. Marinos youth academy at age 13. Ono made his competitive debut in a J. League match against Sanfrecce Hiroshima at Hiroshima Big Architecture on 18 July 2010, as a 62nd-minute substitute for Shingo Hyodo.
At 17 years and 208 days, he was club"s youngest-ever league debutante, a record previously held by Kota Mizunuma (17 years and 247 days).
Two months later, on 5 September 2009, Ono scored his first goal in a 3–1 victory against V-Varen Nagasaki in the Emperor"s Cup. In January 2011, he signed a new long term contract with Marinos.
On 20 July 2015, Ono signed a contract with Sint-Truiden. In February 2011, Ono was called up to the Japan national under-23 football team, or the "U-22 team".
He earned his first cap for the Japan U-22"s against Bahrain U-22"s on 12 February 2011.
