My Family Runs the Army, and You Want Me to Hand over My Military Power?

Traveling through a mindless skit, he became the only grandson of the God of War, and was left behind in Kyoto as a hostage. The civil and military officials of the entire dynasty were afraid of the Dingbei Prince who was stationed at the border with 300,000 mercenaries. The royal nobles regarded him as a thorn in their side and a pawn used to influence the border troops. So what, I am the legitimate grandson of King Dingbei!