Toxic Lips / Levi x oc

Before I give you the description I'd like to say this story will be based off the anime darling in the franxx but in the aot setting still.
Also this is my first fanfic so please work with me lmao.

Code 04 was created solely to take down the Titans by herself without needing back up. While 04 was outside the walls killing Titans, she stumbles across a stoic short young man of the name Levi Ackerman. Levi is injured and needs help and code 04 helps him but with condition.