Never Forget .::Gray x Natsu Fairy Tail Fan Fiction::.

Gray and Natsu have been friends since they were young, but one day Natsu had to leave and Gray never saw him again, now Gray is in his final year of school and Natsu comes back, but the thing is. The two have forgotten each other, but for some reason they know something is on the edge of their brain a lost memory and they key to their true past.