Starting from electromagnetic force, the heavens are sown

Demi-humans are a new breed of human beings who cannot die. Their characteristic is that no matter what kind of damage their body suffers, they can be reborn and return to their original state after death.
This is the story of a man with a strong magnetic field who is looking for fun in the heavens, and the first world he goes to is the world of demi-humans.
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Completed copies: Asian (film and television version), X-Men (the timeline is before Days of Future Past)
New copy: One Punch Man