I Just Wanted to Be a Tyrant, but Instead I Became an Emperor for All Eternity?

[Overhead Summoning System, Machiavellian Strategy, From Prince to Emperor, Villain] Qin Tian traveled to the game world of "Seven Kingdoms" and became a useless ninth prince. He soon discovered that his brother wanted to kill him! In order to survive, he killed his brother, borrowed his identity, and inherited his power and sister-in-law. [Tyrant system binding successful! [Trigger the Tyrant mission, the reward for success is unknown, and there is no penalty for failure! [Congratulations to the host for receiving the reward: King Kong Mortal Realm general—Dian Wei!] [Congratulations to the host for receiving the reward: Free Realm Killer - Black and White Xuanjian! … There are emperors above who are disgusted by their father, brothers inside who are vying for the throne, powerful ministers below who are plotting assassinations for profit, and powerful countries outside who are eyeing him. Let's see how the protagonist escapes from a certain death situation and ascends to the throne and proclaims himself emperor! At the beginning, he killed his brother, deceived his sister-in-law, and killed his father. In order to ascend to the supreme position of the Nine-Five-Year Plan, he became a tyrant, took charge of the world, unified the world, and established a supreme dynasty...