Honor of the Samurai (1996)

from the review:

This card game recreates the atmosphere of the Sengoku era in Japan's history: the struggle among the feudal lords (Daimyos) to install a strong and legitimate Shogun. To install themselves as Shogun, that is.

Every player takes the role of one family of Samurai and the Daimyo they serve. They use honorable weddings, weapons, cultural sponsorship and military power to increase the honor of the family (and attack each other) until one of them reaches a previously stipulated amount of honor. Whoever reaches this honor in the first place is the winner, and the new Shogun.