Fairy Tail: "The Darkness & Light that descends upon us"!

After returning home from the fight with "Oracion Seis" and destroying "Nirvana", Natsu and the rest of the gang come's home all banged up, but safe. Erza goes and ask Mira if she knew where the Master was! Mira said he went to a meeting with the other guild master's, and will return soon. That was when the Master came through the guild's door, behind him was a hooded person, walking in with blood stain on the hood. Who is this mysterious person? And what was the hooded person purpose for coming here? Find out in Fairy Tail "The darkness & light that descends upon us"!