Ono won a Dartslive event in Hong Kong in 2012 by defeating Lourence Ilagan.
[1] He claimed the 2013 Japan Open by beating Gordon Dixon in the final.
[5] Ono made his debut at the World Cup and, together with partner Haruki Muramatsu, they were beaten 5–2 by Northern Ireland in the first round.
[6] Ono lost 6–1 in the opening round of the Tokyo Darts Masters to Raymond van Barneveld, but won the Soft Tip Dartslive Premium Stage event by overcoming Boris Krčmar in the final.
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