The 47 prefectures of Japan:

• Orange – Hokkaido area
• Yellow – Tohoku area
• Red – Kanto area
• Green – Koshinetsu y Hokuriku area
• Blue – Kansai area
• Purple – Chugoku area
• Ocher – Shikoku area
• Dark blue – Kyushu area
• Light blue – Okinawa area