House of the Dragon: House Targaryen's History
Prepare for "House of the Dragon" With a Targaryen History Lesson
6
The revelation of Jon's true parentage shocked both Jon and Daenerys. Jon struggled both with the implications for his romance with Daenerys, as well as what it meant for his relationship with his siblings (actually, cousins), but reassured Daenerys that he didn't want the throne.
As her army moved closer to King's Landing, Daenerys's mental state began to decline. She slowly became more paranoid and brutal, much like her father did decades earlier. The murder of her friend and advisor Missandei seemed to be the last straw. Despite easily conquering King's Landing by catching the army unaware, Daenerys chose to completely burn the city with dragon fire.
Ultimately, Jon realised that Daenerys's reign would never be the wise and just reign that they had both planned and hoped for. He found her in the throne room, inches away from the Iron Throne, where he reaffirmed his love for her before killing her. Drogon melted the Iron Throne with his anguished fire, then carried Daenerys's body away, never to be seen again.
Jon went into exile and rejoined the Night's Watch as penance for killing Daenerys. Instead of hereditary birthright, Tyrion proposed an elected monarch, chosen by the heads of the great Houses. The other leaders eventually agreed and crowned Bran Stark. With a new king on the throne and Jon in exile, House Targaryen finally comes to an end.