( I found the names stings Dragon is called Weisslogia and rouges is Skiadrum)
Natsu pov
"Natsu dragneel can you come here please," Skiadrum roared across at me.
"Coming," I yelled back I ran over and stood in front of Igneel, Skiadrum and Weisslogia. "What is it?"
"We are sending you to earth to protect sting and rouge. Also we expect you to join a guild called fairy tale," Weisslogia explained.
"Why do I need to go to earth land?" I asked tilting my head.
"We are sending you there because you now know four types of magic. Fire Dragon slaying magic, shadow Dragon slaying magic, light Dragon slaying magic and requip. You need human friends," Igneel explained.
"Fine," I whined. "But doesn't that meen I can only use one type of magic?"
"Yes It does. You need to pick one." Skiadrum told me.
"I choose to used fire Dragon slaying magic," I said.
"Very well we are sending you there now. Good luck." Skiadrum, Weisslogia and Igneel teleported me to earth. My adventure has begun.