Japan is severe social position society. The status is a heredity system and it cannot move from it to other class except for a part. When a status divides roughly, it is as follows.

Imperial Family
The Emperor house which is the oldest family line in Japan continueing for over 2650 years is the best class of Japan. Mikado is the greatest not only in the Imperial Family but also in Japan (or in the world). The Mikado's eldest son is called Togu or Kotaishi (Crown Prince).

Bushi class
This class takes charge of military affairs and occupies 7% of population of Japan.
Shogun: A top of Bushi class. A Shogun family may change by political change.
Daimyo: Leading Bushi class and governs local district. Usually Daimyo is an able general's right arm, but when a Shogun family has no power to govern, Daimyo beats its family with military power and open a new Shogun family. (This coup d'etat is called Gekokujo)
Samurai: It is also called a samurai. The military man who can use for a Shogun or a Daimyo.
Ninja: Bushi class which takes charge of a spy or assassination to the Lord. The status is lower than an ordinary Bushi. Some Ninja changes his master with money and Kuge class can employ to kill Shogun with much money. The critical hit was often taken out with Wizardry and it was fearful.
Sumotori: The sportsman who performs sumo wrestling. Talented Heimin can be Sumotori in many cases. Especially the great sumo wrestler may serve a daimyo and may become a Bushi. Nobunaga Oda who governed Japan in the 16th century is famous for having employed the sumo wrestler well.
Ronin: The Bushi who has no master. Most Ronin lost its master by war. Usually Ronin has a side job, umbrella tension. But when a war is occurred, Ronin fights as a mercenary to finds a new master.

Kuge class
Mikado's close attendants and governed Japan until Bushi class gained power. Kuge occupies 6% of population of Japan. Taking tradition cultures and the love affairs the speciality.
Dajodaijin: The highest grade of Kuge class. Only the person who has the blood of the Fujiwara family can take the post. The relation with an Mikado family is deep.
Soryo: A Buddhistic priest. Its work is to recite the Buddhist Scripture to protect a country, and also to raise money from Heimin by telling the Mikado's name.
Geisha: Talented beautiful lady. Heimin can also become.
Kizoku: In many case, the patron of culture and living in Kyoto. No working. Moves by the car which a cow pulls.
Kabuki Yakusha: Kabuki actor. The Japanese superstar. Mikado's protection is received.

Panpii class
Common people. Over 80% of population of Japan. Having no suffrage.

Gaijin
Foreigner. Alien. Barbarian.