If we're talking about the whole country, maybe Neighhon? (like Nihon, which is what Japan is called in Japanese)But for a horse pun take on Tokyo, Osaka, etc, I'm not really sure
I thought they called it Nippon, and that's why the land is called Nippon in Okami. So... Neighpon?
Japan (Japanese: 日本 Nippon or Nihon; formally 日本国 Nippon-koku or Nihon-koku, literally "[the] State of Japan")