Career
Komatsu was chosen as one of the Designated Players for Development by J. League and JFA in 2005 when he was a student of Kwansei Gakuin University. Because of this status, he was able to register as a Cerezo Osaka player while he was still eligible to play for his university club However, he did not play any official match for Cerezo.
After graduating from university in 2006, he officially signed with Cerezo.
On 12 August 2006, he made his J. League debut in a 1–0 loss against Omiya Ardija. Two month later, he loned out to Kyu-League side V-Varen Nagasaki.