Solo Partner (NaLu fanfic)

Natsu, a once cheerful and jolly guy, turns into this unsociable shut away because of the death of the person most important to his life. He never wanted to get involve with anyone. try picking a fight and he just glares horrifyingly and silently walks away, ignoring everyone that tries to talk to him. When Mira recommended Lucy to become his partner, Natsu might change his way. Find out the past of Lucy, the hardship she had to go through before meeting Natsu. The Lucy he thought he knew, is really a Lucy he hasn't seen yet.