The Great Emperor

There is no artifact, no heaven-defying system, and no grandfather to carry around with me. All I have is an extremely coquettish pig. It calls itself Lord Pig, comes from the upper realm, and was once a great demon who dominated the world. It wants to train me into an invincible strongman who can overwhelm all the heavens and all realms! Although its unscrupulousness makes me feel a little unreliable, but in life, there must be a goal to fight for. Done!