My Lovely Vampire. My Lovely Bride (Ereri/Riren)

This is Alpha vampire levi x omega half human eren story!
Sorry for the incorrect words!
And i don't own aot/snk!

Eren was lonely in forest he have a small cottage and friends with him and that is wolf mikasa and rabbit armin. since eren was a five years old kid he was alone and the only he know is the key with him is something have to do... but what is it?
One day eren found a beautiful flowers he saw a black with red on the flower once he picked the rose everything change...
But what is it?
What will happen?
Will eren can have a good life? or bad?