In Fire Emblem Fates, Corrin’s adopted home is the kingdom of Nohr.
Corrin is originally a child of the Hoshidan royal family, but King Garon of Nohr captures Corrin after killing Hoshido’s King Sumeragi. Corrin is then raised in the Nohrian royal household alongside the adopted siblings Xander, Camilla, Leo, and Elise. That upbringing makes Nohr Corrin’s adopted home, even though Corrin’s biological origins lie elsewhere.
The central conflict of Fates turns on this divided identity. At the beginning of the game, Corrin must choose between the biological family in Hoshido and the adoptive family in Nohr. Choosing Nohr leads to the Conquest route; choosing Hoshido leads to Birthright. Revelation follows a third path in which Corrin rejects both sides of the war.
Hoshido is therefore a common wrong answer: it is Corrin’s birth kingdom and the home of Corrin’s biological relatives, not the kingdom that raised Corrin. Valla is also distinct, serving as a hidden third kingdom connected to the deeper mythology of the story.