However, when Yoritomo came into power after Heike (the Taira family) was searched out and destroyed, Tadamune came to be accused as an enemy who murdered Yoritomo's father after all, and he was allegedly killed on the orders of Yoritomo at last.
しかし平家追討後に頼朝が覇権を握ると、やはりその父の仇として追われる身となり、最後は頼朝の命によって殺害されたらしい。