Where it begins

This story follows Roselyn Wilson, doctor who finds out about a Eren's abilities and wants to study Eren from a Medical perspective and hopes to gain knowledge on how to help humanity with disease, injuries and facing against titans. When she goes to the survey corps to study him, she encounters a Levi who was from her past. At first she believes he dislikes her and vaguely remembers her. She must fight the walls Levi has put up, to figure out how he truly feels about her. While tackling out the mystery behind titans, and how humans inherited their abilities.

I only own rights to the character and certain aspects of the story, attack on titan world, and characters are credited respectively to the author