Invincible + System + Urban + Sweet Romance + School Belle
As spiritual qi revival begins, living things gradually mutate and humans come under frequent attack. Because his awakened ability was so weak, Qin Xiang can barely survive in the future.
Thirty years later, an object from beyond the heavens strikes him, and he is reborn thirty years in the past, to the year he was eighteen. He also awakens the Survivor System.
The present is still peaceful. During the process of awakening his abilities, he happens to save a school belle, who turns out to be the stunning future SSS-rank Empress. Qin Xiang decides he’d better win her over sooner rather than later…
If you don't write about rebirth, just write about the beginning of the apocalypse! A protagonist survives in the apocalypse for decades and is reborn, and even awakens his power and still looks so rubbish! Might as well die!