What kind of magic? This is called cultivating immortality!

"I am the Heavenly Emperor, and I shall suppress all enemies in the world!"
"When the world calls my name, I will appear again!"
"Thirty years east of the river, thirty years west of the river, never underestimate a young man's potential!"
Zhong Hui, a patient with severe delusional disorder, claims to be the reincarnation of the "Heavenly Emperor" and has been imprisoned in Qingshan Mental Hospital for twelve years.
All doctors unanimously diagnosed him with late-stage paranoia, increasing his medication dosage and sentencing him to life imprisonment.
One day, Zhong Hui seized an opportunity to escape and leaped into the sewers of the "Boundary Sea." When he opened his eyes, he found himself in a new world brimming with spiritual energy.
I originally intended to start with a mortal body, cultivate the path of immortality anew, surpass the peak of my previous life, sweep away the mysteries of the heavens, and protect peace for all ages.
But suddenly a mechanical voice echoed in my mind:
[Congratulations, host, you have been bound to the Magical Girl System.]
"What kind of magic? This is called cultivating immortality!"