Kimura is an explorer, ranger. In Arcuz he is claiming he's a known to everyone, famous warrior and that he once slayed an evil dragon and that its eyes were big as a cave, stole God's apple and that, that apple was as big as a mountain, to escape he had to have a tough fight with the gods and he defeated them all, he also says he's from a family of warriors.
Hey! You're an explorer from far away places, aren't you? I'm an explorer too!, My name's Kimura. You've heard about me, of course? Everybody knows Kimura!