this is a crossover on the film LUCY by Scarlett Johansson and the Avengers. Lucy Romanoff is Natasha Romanoff's identical Twin sister you can tell them apart from their hair colour. This is because Scarlett Johansson plays both characters so it is easier to make them identical and all credits go towards the creators of Marvel and of LUCY

I woke up in a dark space I tried to move but I couldn't suddenly a blinding light appeared and I find myself in a strange room in front of two strange humans. I say "Are you, my Master".They are quite surprised let's see where my new adventure brings me.

Our main character has reincarnated...but with a catch? Instead of any of the tropes she could have reincarnate as, she reincarnated as both the villainess and heroine!? Despite having only a single consciousness, she is aware and in control of both bodies! Controlling two bodies with completely opposite roles as only a single individual, how will our dear protagonist handle a world designed to both adore her as the heroine and hate her as the villainess at the same time?

What happens when an average guy wakes up as Tiamat(fate) in the world of Danmachi?