Yamada Naomichi (山田 直道, lit. yamada naomichi) currently known as Hammer Nao (ハンマー・ナオ, lit. hanmā nao), is a recurring character in Hajime no Ippo. He is Japanese featherweight boxer affiliated with the Hachinoe Kentou-kai. Prior to the events of New Challenger, he was a member of the Kamogawa Boxing Gym. His surname is Yamada. In Japan, surnames are listed before given names.