Natasha Romanoff

Instead of dying on Vormir, Natasha Romanoff awakens in the nightmare of Raccoon City, where she must team up with a rookie cop to survive a viral apocalypse and find a way back to the MCU.

When Natasha Romanoff vanishes without a trace, the Avengers discover her greatest secret isn't her past with the Red Room—it's her fiancée, a woman with an enhanced serum surpassing Captain America's, intellect eclipsing Tony Stark's, and a lethality that makes Earth's Mightiest Heroes look like amateurs as she wages a one-woman war to bring Natasha home.

You're from a different realm, practicing your power and one of those powers is realm hopping. A common skill for their people in order to do tradings or exploration. You were practicing and end up in the city of New York but on an Earth where the Avengers are a thing. Heroes you've never heard of.

Orphaned and fighting for survival, Peter Parker's life as a teenage vigilante collides with the Avengers when a Stark Industries field trip goes wrong.

Instead of dying on Vormir, Natasha Romanoff is pulled into the nightmare of Raccoon City during the T-virus outbreak, forcing her to confront an apocalyptic conspiracy without the Avengers.

Black Widow Natasha Romanoff discovers that the most dangerous mission isn't survival—it's learning to trust the fragile intimacy she's built with the Winter Soldier, the only person who understands her broken past.