Evil-mc Stories

Thousands of years ago, Hao Tan was just an ordinary schoolboy-until a wish cast him into a cultivation realm where he became the feared and self-proclaimed Imaginary God. With a system of infinite power, he shattered sects, defied the heavens, and stood against divine beings. But even gods fall. After a catastrophic clash with the Celestial Venerable, Hao Tan is cast out and reincarnated into a strange Earth-like world... in the body of a girl named Tan Xiu. Armed with her system, a new identity, and a curiosity that borders on dangerous, Tan Xiu explores a society brimming with technology, mystery, and a hidden Potential to change all of history.

Mc is dies by the almighty truck-kin, he gets reborn in aot at the year 835, 10 years before canon(same age as the main trio). Mc has no advantages, Beware I may kill mc any time. No plot armor for him. (There is going to be manga spoilers, but I'll try to keep it as little as possible) [Disclaimer, I don't own any of the characters, they belong to the guy who made aot. I only own the story and my mc]

This is the story of an ancient evil god in a new era.