A corporate drone worked to death opens his eyes and finds himself transformed into the immensely privileged young lady of the Duchy of Sonia: Fia von Greifhardt.
Not only is she a duke's daughter, she is also the heir to the phoenix Phoenix. Born with control over fire, she has noble blood, outrageous talent, and beauty enough to blind her enemies.
She thought this was the start of a satisfying reborn story, but the moment she woke up, she was diagnosed with "falling disease," and her family believed she was possessed by a demon.
Even worse, the very next moment she was told she had to marry a useless young master from a lowborn country noble family, a man who rose in status by serving porridge to a fallen emperor!
And so, Fia, the transmigrator, blew her top on the spot:
"Break off the engagement! This young lady won't marry him!"
