Earth dragon slayer (Fairytail x OC fanfiction)

This story follows the Experiences of a boy who was orphaned and taken in by the earth Dragon Terrakion, His village was attacked by Dragons with him being the Only survivor, He was then Given the Option To Live in the Kingdom Ruled over by the Earth Dragon and learn Earth dragon slayer magic, Time goes by and he gets accustomed to his new life, but peace will only last so long, the next thing the boy knows More Dragons have come and invaded the Earth kingdom, a repeat of what had happened to him a few years prior, but the next thing he knows, everything goes black and he wakes up in a new Era with Unfamiliar Surroundings, This story Will be be a Crossed over, It takes place in the same verse that @Themanofcultures "Void dragon slayer" takes place in