Relationships between Hidetada, the shogun, and Tadateru MATSUDAIRA, his younger brother, were seriously bad, and Masamune DATE, the father-in-law of Tadateru, did not abandon his desire to control the nation.
将軍・秀忠とその弟・松平忠輝の仲は険悪であり、忠輝の義父でもある伊達政宗は、未だ天下取りの野望を捨てていなかった。