Lucy the Celestial Dragon Slayer

Lucy is worried she isn't strong enough to be in the group so she does a mission and meets a dragon who wants her to become a Dragonslayer. Lucy has no idea that she will be getting the journey and opportunity of a life time but with every gift always has a price to it, Will Lucy powers be used to help the people she cares for or used for evil. Maybe Lemon in the future NaLu moment