Ugh this is really shaking my thoughts.
I know they were (or still for niina's case) in a toxic, abusive, unloving marriage. They deserve happiness. If their happiness is with each other then they should be together.
But... Their relationship's foundation is from cheating... I can't get myself to accept that. If they get in a relationship now or right after both divorces, it makes me feel disgusted.
Maturity too. I think michi has already moved and developed after facing him and moving out. Niina has to move on and mature as well (remember he had mommy issues /s) before getting in a new relationship. Please do a timeskip at least before they end up each other... Why is therapy not common?
Then again, who tf cares? Go ahead kaede and yo shouldn't really care anyway they deserve it /s