The author had made Matilda so dislikeable so they need some way to ensure her survival, however forced it might be.Overly merciful MC. Classic. Stupid.
At least this time, he got some guarantee that the opposite party will behave.
Magic vows on a deity's name magically solving everything. That's way too easy to my taste.
This leaves nearly no room for actual human doubt and distrust after such a one-sided aggression, so character development is forced rather than earned.
Butler for haremThe author had made Matilda so dislikeable so they need some way to ensure her survival, however forced it might be.
...god, I really hope the author wouldn't put that idiot princess in MC's harem.
...I'm okay with the butler.
Not a direct response to your post but I can't help but mention that after reading this chapter I had the same expression as your avatar.Peace, he said. That'll depend on whether the Kingdom is run by people like Odin, or if there're more like Matilda.