Reborn in the City: The Demon Emperor Returns

The Demon Emperor of the Immortal Realm is reborn as a poor high school senior, carrying a thousand years of memories. With pill refining, talismans, artifact crafting, and formations in his left hand, and thunder techniques in his right, he tramples spoiled brats, cuts down sects, subdues the seas, and conquers Kunlun… In this life, he will make the city bow before him, and make the Heavenly Dao lower its head. In his previous life, Beichen Demon Venerable Ling Yun reached the pinnacle of the Immortal Realm, only to be betrayed by his beloved and his sworn brother, forcing him to self-destruct in the Chaos Secret Realm.

In this life, he uses the Reincarnation Mirror to return to his senior year of high school. His family is destitute, his parents are ill and disabled, and cruel neighbors bully them, but there's still time to rewrite everything!