The World Of SuperHeroes is too rough for mob

An average young man reincarnated in the world of superheroes but his superpower was not strong whereas superpowers were the law.

But he would survive in that kind of World with everything he had and he would become the world's greatest ' FEMALE's Superheros' ASSISTANT' with his superpowers which were ' Luck and Charm '. 

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Author's Note -
MC will not become strong like Superman but he will become stronger like ' Batman ' .

The title is like this because I could not think of the title.
The story is combination of DC, Marvel and My Hero Academia