The Elder Scrolls XVI: Sworn to Carry Your Burdens

[Fyraltari]

Maybe the dragon at the tower just didn't catch on that this is what he felt. "Dragonborn? Nah man, there's no way, I'm probably just imagining things."

The funny thing is that Mirulmnir (that dragon) is probably the one who, second only to Paarthurnax, has had the best oppurtunities to learn about dragonborns since the dragonguard file lists him as still alive and unaccounted for by the second Era. This implies he's actually managed to survive all this time by hiding only to go on a rampage once Alduin was back (meaning he would get resurrected if he'd get killed), only to become the Last Dragonborn's first soul-sandwich.