I Am the Emperor of Liver: the System Is Overheated and It All Depends on the Liver

My name is Zhou You, and today is the 50th anniversary of my coming into this world. As the Liver Emperor, I have obviously tried my best. To the common people, I overthrew the tyranny, established the queen, relaxed taxes, and cultivated fields. In order to let the people of the Zhou Dynasty live and work in peace and contentment, I captured the evil dragons in the east, traveled the trade route in the west, attacked the Xiongnu in the north, and the penguins in the Antarctic! But still... [System prompt: You have successfully killed the Evil Dragon King and gained 200,000 experience points] Given so much experience, the level is still not full? Damn it, I won't play anymore! I want to cheat! I want a knife +999999999! "If the game cannot be maxed out, what's the difference between that and those bad gamers?" "But I'm just a bad gamer!" "Since you are a bad game player, then you are a bad game player!" When it reaches full level, it becomes an obsession, and the wandering inner demon becomes complete, but it has no way of starting and is completely confused. Why is there a person growing on my liver? So where did I (inner demon) come from? There must be a hidden map! I want to achieve [100% map exploration]! There must be some hidden characters that haven't been unlocked yet! I want to achieve [100% collection of all characters]! There must be some unfinished achievements in the underworld! I want to achieve [100% achievement]