Natsu made a vow at Lisanna's grave to get stronger, so he could make sure that none of his friends and loved ones would fall to the same fate she did. But as he gets stronger, he discovers secrets from his past that will change his future forever. NatsuXErza.

While still under training with Igneel, Natsu is badly injured and unconscious. When he is healed and gets back to training, Igneel notices Natsu is acting different. Natsu begins to get smarter and stronger than before. How will affect him and his future? Smart/Natsu Much Stronger/Natsu, i do not own fairy tail or any of its characters.