With the Protagonist's Halo Above My Head, How Could I Possibly Be the Villain?

[Comedy + Silly + Villain + No Female Lead + A Battle Between a Transmigrator and a Reborn Emperor] Lu Ming transmigrated just as he was about to reach the 'pinnacle' of his life. Having transmigrated back to a world where he readily embraced the "protagonist's halo," he firmly believed he was the protagonist of this world. He almost starved to death at home at the beginning, firmly believing that the protagonist always had a childhood sweetheart to bring him food, but instead he was met with Big Yellow... He kidnapped someone else's ancestral tablets, beat up a reborn immortal emperor like a thief, and broke his dantian through cultivation. The main theme is that I am the "protagonist," destined to suppress the present and dominate the ages... When Tiandao awoke from his slumber, he discovered that the protagonist he had prepared was dead. The problem was, that character had nine lives! How on earth did he lose them?