Gray hasn't showed up to the guild in over two months and that worried everyone especially Natsu who kept track of who was there and not. They began to worry more and sent Natsu to look for him, but what did Natsu see?
One night, the guild has a party. Natsu and Gray had a drinking competition. Without knowing, those two did it.
Two weeks later, Natsu kept getting sick but no one knew why. Erza told him to go and see a doctor then. Once he did, Natsu came back quits the guild, disappearing for 9 months. Then, they found him one night but he then disappeared once again for 5 years, until one day, something happened. Read more to find out.