[Western Crossover] The Supreme Sorcerer of 221B

After waking up, the two Vespers from separate universes find that they have switched identities.

Someone tells the ruthless Vesper from the BBC universe that she will become the Sorcerer Supreme and protect Earth.

Someone tells the optimistic Vesper from the MCU that she will one day conquer and destroy the world.

Vesper 1 & 2: What the hell are you talking about???

.

At first, the Vespers both think they've landed in a slice-of-life management game.

They work hard to develop their tech and gaming companies, study hard, and strive to graduate.

But Vesper runs into villains every other day.

While being hunted by enemies from both worlds,

she ends up saving the world along the way...

How to defeat London's criminals with high tech,

and attract New York's villains with dark magic.

.

To fight the forces of evil,

Vesper decides to take control of London's criminal network and restructure New York's underworld.

Before she knows it, Vesper has become the biggest dark power of all???

.

Sorcerer Supreme: "I'll eliminate this unpredictable factor myself, but I hope I never have to go that far."

British Government: "There are always people drawn to dangerous things they can't control, aren't there, my dear brother?"

.

When everyone thinks Vesper has a split personality,

even Vesper herself is almost convinced.

Rumor has it that the biggest dark power in London/New York is a terrifying madwoman.

With her mastery of spatial magic, Vesper becomes the most terrifying urban legend?

.

As it turns out, traveling between different times and spaces

can make people with weak minds lose themselves.

Fortunately, Vesper finds her anchor (X)

(She's been feeling a lot better since she started letting loose (?))

So after saving the world, Vesper nearly destroys it again.

She almost ends up on the most-wanted lists of the British Government and the superheroes.

.

A little skit:

Ned: I thought my friend was just a good student in New York, but he turned out to be Spider-Man. I thought my cousin was just a rich heiress, but she turned out to be the Sorcerer Supreme.

Spider-Man: I got tricked into working four jobs before I knew it. So annoying, but I still have to smile.

Peanut: I thought my life was a mystery, but it turned out to be science fiction.

Vesper One (holding a mechanical exoskeleton): I'm physically in Midtown, New York, but my heart is on Baker Street in London. Criminals, have you missed me?

Vesper Two (holding the Darkhold): What good is science? Magic works so much better!

Consulting Detective/Strange Fruit: We're each other's stand-ins (smiling)

Iron Man: She only beat me because she had the script!

Captain America: At first, I thought she was another Tony Stark... I was wrong. In some ways, she's even harder to control than Tony.

Wanda: Vesper is really nice and thoughtful. I just feel like I'm always living in her shadow?

.

.

Asgard's Third Princess: Damn Earth sorcerers.

Moriarty: Damn technology.

Penguin: Damn crazy do-gooder.

.

.

Pairings:

London's Consulting Detective x Marvel Vesper

BBC Vesper x New York Iron Man

Gotham joins in later

.

P.S.:

1. At first, the female lead can be considered one person. All versions of the female lead come from a multiverse.

2. The timelines of the worlds have been changed.

3. There may be some out-of-character moments, for the sake of sweet scenes.

4. All the settings are made up by me.

5. The female lead grows over time, has obvious personality flaws, and becomes invincible later on.

Theme: Change the future by changing the past