He played in Nippon Professional Baseball (NPB) for the Saitama Seibu Lions and Hokkaido Nippon-Ham Fighters.

On August 31, 2007, he made his debut as a relief pitcher in the Pacific League against the Tohoku Rakuten Golden Eagles.

[3] And he recorded his first home run and RBI against the Yokohama DeNA BayStars in the Interleague play on May 28.

On August 12, 2021, Kimura and Ryusei Satoh was traded to the Hokkaido Nippon-Ham Fighters in exchange for Katsuhiko Kumon and Shota Hiranuma.

[5] On September 20, 2023, Kimura announced his retirement and played in his final game against the Saitama Seibu Lions, his former team.