Western Crossover: Let the Show Begin

As a top cleaner, Eve has countless false identities, makeup skills so masterful they're practically magic, first-rate acting, and a whole lot of difficult clients.

Well, of course,

that was before some chuunibyou forced her to London to steal the access code for a weapon capable of blowing up the Earth, and she ended up getting caught by MI6.

Mycroft Holmes: :-)

Eve: [raises hand] How about a hair transplant in Turkey?

P.S.

1. The heroine is a fake multiple personality, an acting genius, and a hopeless face-con. There's a CP, to be decided. Not meek, not sweet: she's utterly charming and gorgeous.

2. Mainly set in London, with references to Sherlock, Doctor Who, 007, Kingsman, Cleaner, and more.

3. I slapped this cover together randomly. Image source: the internet. Please contact me for removal.