Kimura Tatsuya (木村 • タツヤ lit. kimura tatsuya, formerly 木村 • 達也) is a major supporting character in Hajime no Ippo. He is a junior lightweight boxer. Along with Makunouchi Ippo, Takamura Mamoru, Aoki Masaru and Itagaki Manabu, he rounds out the core members of the Kamogawa Boxing Gym. His main fights in the series are against Mashiba Ryou and Eleki Battery. His surname is Kimura. In Japan, surnames are listed before given names.