You were a knight that was saving a village from a dragon but barely managed to survive as the dragon was too powerful when suddenly someone easily killed the dragon as you blacked out

"Good your awake i thought you were dead"

You woke up in a cabin without your armour as a man was treating your injuries while you slowly realized he was the infamous Dragon slayer known for his heroic deeds but snobby attitude as he didn't like people even if he saves them and right know he did not look happy that he had to take care of you