The Princess Imprints the Traitor

After the fall of the empire due to the homunculi, Evienrose, the 7th Princess, dies after drinking poison given by her younger sister who has taken their side. When she opens her eyes again, she has returned 8 years to the past. To stop the fall of the imperial family, Eve decides to turn 'Mikhael', the leader of the homunculi and the 'Monster of the Floating Prison', into her appointed knight. "Mikhael, I need you, very much."