Ken was born in Shibuya. He played youth football with Yokohama F. Marinos and Kawasaki Frontale.
Career
Ken started his career with Kawasaki Frontale. He stayed with them for a few years before joining Thespa. His time at Thespa was successful in the 2009 season, scoring 23 goals in 43 games in the league. He joined Vissel Kobe shortly after. On 30 June 2012, Tokura scored a long-distance goal from outside the penalty box and celebrated his goal with a "Mario Balotelli-style" celebration, which resembles the celebration after Balotelli's second goal against Germany in Euro 2012 Semi Final. He was then given a yellow card by the referee.[2]
Ken joined Consadole Sapporo a few years later.
He joined Cerezo a few years later. He made his debut for Cerezo against Vissel Kobe, coming on in the 65th minute for Kota Mizunuma.[3] He scored his first goal for the club against Vegalta Sendai, scoring in the 35th minute.[4]
Ken joined V-Varen Nagasaki after Cerezo. He made his debut for V-Varen against Zweigen Kanazawa, coming on in the 67th minute for Cayman Togashi.[5] He scored his first goal for V-Varen in the 87th minute against Renofa Yamaguchi.[6]