what a wonderfully original premise

Yes! The best premise for an SI so far besides the Rhaenyra and Laena ones. Can't wait to see where this goes.

Better be without a second head but really like the idea. Have him marry Rhaella .

İyi.
Good.

Looking forward to seeing more I have never seen an Blackfyre Self insert I would suggest conquer the three doughters or slaving Citys on Slavers bay like daenerys Targaryen it will be fare enough a way thron westeros that your Self insert will be save. You could then Conquer Westeros when Robert Rebellion started or what untill the war of the five kings. Which you luck can see much potential in your story hop it does not become an overpowered self insert story if you are looking for inspiration I would suggest reading wearing Robert crown and A trident is reforged on battles pace forum.