They probably will Not Divorce. Because both of them Made Mistakes in the Past and Now are willing to face them. He will Face his Past Mistakes and Change for the better. In the end they'll probably end up Actually falling in love. This isnt just Character Development, He didn't change because she Changed her attitude towards him, He is Changing because he recognised his Own Misrakes and Now that he Has a Second chance he will lead his Life the Way He actually Wants instead of Following others into it. Yes his Reasoning was Horrible, Obviously using a Human being for power is Shit. But If we're talking about the Plot here, There wont be a Divorce scene, Its Obvious what the creator aimed for.
I still feel like the ML is such a jerk. Even though he time traveled, what happened to the past still sticks to you, even if you undergo character development, it will still haunt you. Even if you try changing it, you still did it in the past and the Reina in the past still remembers how the ML treated her. I’m for the divorce scene. Even if he still undergoes character development, my hate for him will still remain.