Marinette Dupain- Cheng against the world

Marinette Dupain- Cheng was shoved down the stairs and killed by Lila Rossi at the age of 15. As a female lead, she didn't get the happily ever after she deserved. She died with anger and regret. And that's where you came in:

Y/N was not a normal girl. She was an agent equipped with a system capable of unimaginable things. One of which was entering the various universes throughout the multiverse and setting them right. Like this one.
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Does your heart ache with pain and malicious hate? Do you have enemies you want to smite of the face of the earth, to inflict your anguish on them ten fold? The system has your back.