Omg omg omg this is the best plot twist ever

I love that they both have memories of their past lives! Usually it's just one of them who has to try and fix everything, but this time both want a different outcome from what they've already experienced. And this explains his reaction during the banquet too, to the reveal of the birds and not letting them push Reina into doing the vow. Now, duke, here is a thought though: you could ASK her if she came back too?