The Daybreak Between us (Reiner x reader)

"The moon chases the sun, not for cruelty but for love"
Y/N L/N a girl who was raised outside the walls, far from anyone but her and her parents, who familiarized herself with titans to the point of near calmness. A girl who doesn't know that what she really needed was a friend, or maybe four?
A group of warriors who come to Paradise island in order to eradicate the people of the walls find themselves staying the night in a strangers home before continuing on with a path that would change their lives forever.
What happens when they meet again? But this time as cadets?
What happens when they are scouts and fighting for their lives on an almost daily basis while also dealing with the struggles of a relationship?
What happens when the betrayal hits harder than it should? When she can't move or speak because the man she thought to be the closest to her, and her friends, turn out to be her enemy?
What happens when they (or at least one of them) take her to Marly just as the war begins? When she tries to convince him this isn't the life he was meant to live?
What happens when they're old and grey after overcoming all the challenges the world has to offer?
can he stay true to his mission?