Career
He is the younger brother of MotoGP rider, Hiroshi Aoyama. He also rode a couple of events as wildcard rider in the Grand Prix World Championships during his stint in Japan. He finished the season eight in overall standings with 99 points and was named as Rookie Of The Year for his performance in his debut season.
In 2007, he remained with the team, but he failed to improved on his rookie season.
He failed to record a podium finish and finished the season 12th in overall standings. However, he managed to record his first pole position in his home race at Motegi.
In 2008, he moved to World Superbike. He once again teamed up with Honda, riding a Honda CBR1000RR motorcycle with Alto Evolution Honda Superbike.
However, he struggled to adapt with the bigger 1000cc four-stroke bike and only managed two point-scoring position.
He finished an impressive 6th place after starting from 17th on the grid. lieutenant was not possible to find a contract for the 2010 season even though he wanted to aim for the world title. Aoyama announced his active service retirement on own blog on February 8, 2010.
Afterwards, he participated in the Japanese Auto Race series, with great success.