Board Thread:General Discussion/@comment-79.160.190.167-20130802230901/@comment-114.121.154.120-20151005045133

Unlike Dragons, Dragonborns can actually died. They have the soul of a dragon, but they're still human and mortal. Otherwise Alessia, Reman, and Septim won't even die in the first place, they're Dragonborns.

As for the fate of The Last Dragonborn, i came up with an interesting thought about it after reading some pages on the wiki. Specifically on Akavir (Continent) page, we can read about a myth on Akavir that one time, there's a Nord coming to Akavir and with the help of a Dragon, devastate armies of Akaviri.

Now we could say that it could happen in the past, and could just be any other past Dragonborn nord. But something interesting to note is that there are literally no past Nord Dragonborn ever befriend Dragons. The only past Dragonborn that befriend Dragons are Dragon Priests, which was actually Atmoran, not a Nord yet. The only possible Nord Dragonborn that befriend Dragons is LDB. As for the timing, the myth could just be some kind of a prophecy instead of an already happening myth, OR it might really be happening in the past and LDB actually manage to accidentally go back through time.