A Dragon From Heavens Tower

Original idea from Natsu is Awsome. Natsu was a slave in the Tower of Heaven, never found by Igneel or Makarov. After the rebellion, he and his new friend Sorano are taken by Brain into the Oracion Sies. They believe Nirvana is theirs for the taking, but nothing is ever that easy. And their journey has only just begun. Natsu x Angel, future harem.