Takeda Shingen is one of the most famous SAMURAI in the Sengoku era.
His father was conqueror of the land of Kai(current Yamanashi prefecture), and Shingen was his the oldest son.
His father gave more affection to his youngest son than Shingen.
The father intended to appoint a younger brother of Shingen as his successor.
Therefore Shingen expelled his father, and he himself became the conqueror of Kai.
After that, he became a famous daimyou in high political ability and strategic skill.
Particularly, cavalry of Takeda's army was famous, and they were considered the strongest army in Sengoku era.
Shingen was called "Kai no tora"(The tiger of Kai) and was feared by other people.