The Dragons Return- Sequel to You Betrayed the Wrong Dragon

Prolouge

It's been 10 months since Natsu's death. Things are finally returning to normal. Gray has returned from suspension. Hewas outcasted for awhile for what he did but eventually he rejoined Team Natsu.Every was going great until.

On Tenrou Island 1 year Ago
Zeref was currently on Tenrou Island. Mavis had put the island under Fairy Sphere which wouldn't allow Zeref to leave. He was slowing breaking down the magic but it would be awhile before he would get out. He needed to get out quick enough if he were to save Natsu. He wasn't dead but in a death like sleep. He didn't give all of his life to Lucy. He still had a month of life left. Zeref has the power to give him more but he can't get to him. Natsu only has about a week left before he really dies. He needs someone with enough black magic to cast the spell but no one fits the bill, except.

Zeref concentrated on his target. After a minute he heard someone speak. "Why have you invaded my head black wizard"The voice said
"I need your assistance. Your the only one with enough black magic to help me revive my brother" Zeref Replied.
"What would I have to gain by reviving your brother"
"Did I mention that he is the Son of Igneel and he's also E.N.D".
The voice paused.
"If he is the Son of Igneel and he is E.N.D why would I bring him back after what Igneel did to me".
Zeref was getting desperate " With the right training you could make him your pawn or a opponent strong enough to fight you you. I know you've been dying for a good battle for centuries Ancologia".
" Very well. I will train him to be powerful them I will kill him and destroy the world."
Zeref relaxed" So be it.Take this spell and cast it on Natsu's grave in Magnolia. But hurry, in 1 week it will be too late".
"I'll be on my way then".
"Wait one more thing". Zeref said "Natsu will have no memories of Fairy Tail for 1 year. I imagine that he will want to return when that happens so your on a time limit".
Zeref cut the link and went back to try to break the barrier. It would be a year or two before he could leave but he wouldn't give up until he's free.

In Magnolia
As Ancologia reach the town of Magnolia he went to human form and began to walk to Natsu's grave. When he reached it he could sense a faint magic power. When he walked up to the grave he saw the tombstone that read Natsu "Salamander" Dragneel. Brother,Leader,Friend. The tombstone had fire marks engraved into the side and flowers and candles lit around it. It made him wanna puke. He started to cast the spell on Natus. After a minute nothing happened. Ancologia thought the spell didn't work. He was about to leave until he saw a glow from the grave. Then the dirt blew out of the hole and out climbed Natsu. Natsu was wheezing really hard and when he saw the candles he eat the fire. He looked at Ancologia then collapsed. He picked them up than went away.