Return of the Meteor Emperor: I Am Cultivating Immortality in the City

The emperor of the immortal world fell and was reborn as a high school student who was dying of poisoning. My sister is seriously ill, surrounded by powerful enemies, and her spiritual energy is exhausted. In a desperate situation, the [All Heavens Supreme System] is activated. From then on, the campus, the city, and the secret realm... Were all my training grounds. On the day when I reunite my soul and return to the Nine Heavens, all the gods, immortals and demons will come to die.