Japan

Japan is the main setting for the story's first half, governed by the corrupt Japanese Government and divided into 5 separate regions which each of them is ruled over by one of the Bōkun. The five regions are:, , , and  named after the Five legendary kings of Wa of ancient Japan.

San
The calmest region in Japan, known for its delicious seafood and martial arts experts. It is ruled by a Bōkun who represents Emperor Nintoku, the emperor of the San era, with the element of hunger.

Chin
The center of crime in Japan, with mafia's headquarters usually stationed there and an infamous reputation of being completely restricted to Japanese citizens. It is ruled by a Bōkun who represents Emperor Hanzei, the emperor of the Chin era, with the element of rage.

Sai
The middle region of Japan, where the capital Tokyo is located, and the infamous Tyuromi City. It is known for its vast technological industry and advanced communications, usually the center of education of Japan itself. It is ruled by a Bōkun who represents Emperor Ingyō, the emperor of the Sai era, with the element of divinity.

Kō
The tourism center of Japan, with many landscapes and amazing scenery, it is the primary target for tourists who come to Japan. It is ruled by a Bōkun who represents Emperor Ankō, with the element of nightmare.

Bu
The smallest region of the Japan and the one with the least population, with only 5 cities located within it. The rest being wildlife centers, factories and planetariums. It is ruled by a Bōkun who represents Emperor Yūryaku, with the element of death.