Dragon Prince ( httyd fan fiction)
Hiccup was always considered the weakling of the village, he was bullied, pushed around and beaten up by all the other teens, even his cousin. but it was only until one day when he shot down a night fury the most feared dragon in the whole archipelago, the so called offspring of lightning and death itself. But when he couldn't kill the dragon he took the other option... and trained it. him and toothless were the best of friends but one day when he is chosen to kill the monstrous night mare in dragon training , he can't handle it so he runs away on the back of toothless, but only for the two to be snatched up by dragons.
but 5 years later when hiccup returns to Berk, he is not the hiccup they all once knew.