Httyd: The last of my kind || httyd x male reader story

(Rewriting)

The story begins with berk under another raid within that raid a boy with armour and wings is hit in the head quite hard and loses his memory of attacking hiccup or the dragon along with the night fury soon after. This black dragon was a large black male wyvern, he had purple eyes and razor sharp teeth. It's the last of its kind and the last of its type of a rare legendary wyvern that's was thought to go extinct years ago. After hiccup finds him he bonds with the night fury and the large black wyvern.

Little did they know they wyvern was actually a shape shifter and could change into a human and back into a wyvern again at anytime. The shapeshifter teen has slow ageing which is not know of in any human. He has normal and sharp fingers, sharp teeth. Human black large wings on his back. Has regeneration if his head was cut if he could slowly regenerate it again to normal. He even has rare reaper metal he sheds from his wyvern scales that are extremely rare to have in battle.