Two months before the Arc Laxus, Natsu is a solo mission and Cobra is defeated and humiliated by it. Mystogan to be in a nearby mission is Natsu half-dead and saved. Natsu asks Mystogan if he is weak he responds:
"For fall Natsu? To learn to stand up."
Reflecting on the words of Mystogan Natsu begins a hard training to become stronger, defeat enemies and rivals, find Igneel and of course get back at Cobra.
rules:
1- Natsu must receive the Raenryuu mode before Tenroujima
2-Natsu know Wendy before Oracion Six, when they were still with their dragons or before the battle against Laxus you decide.
3-Pair should Nawen before Tenroujima.
4-Erza must be paired with qualque person less Jellal or Gray.
5-If Igneel lives or dies you decide.