Birdie (Levi x OC)

Birdie had gone through most of her life as a military engineer within the Garrison Regiment peacefully. She didn't have to fight titans, just come up with weapons and contraptions that would prevent them from breaking down the walls that protected humanity.

However, the discovery of a human having the ability to transform into a titan changed all of that, causing her to leave her current military position for a new, much more dangerous one.

There, she meets Captain Levi. A cold, distant man who Birdie can't help but want to get to know.

DISCLAIMER:
I did not create all of these characters, nor did I come up with the major plot points! The credit all belongs to the wonderful Hajime Isayama :)