
I can see how someone would feel that way!
To me, leaving him excommunicated is a more logical door for side-couple. He has all the key factors needed: showed interest in men, heartbroken, in need of a place to belong, and previously devoted. Him being won over by a uke, accepting his lingering feelings towards MC are admiration, and then settling down content.
The way it went leans more towards creating a villain who will show back up. I get the vibe MC will be pushed to kill him at some point. (Or let ML kill him, or feel torn that ML had to kill him.) Gives me more "plot device" and less "spin off."
BUT, I am by no means trying to say "you're wrong," just sharing my take. I can definitely see how there could still be spin-off potential, it's just not where my mind instantly went.
I agree fella needs to be punished.
However... this was not the right way. XD This is how you CREATE an antagonist! Fella was loyal enough to leave and vow his silence, refusing money in an attempt to show it. His anger was directed at himself failing at that point.
But then ML just had to go and give this guy a reason to want revenge on him? To have hostility towards the wizard?! Seems like a bad move.
Like punish him and strip his memory. If you can remove his peen you can remove/muddle with his memory.
Maybe I'm just paranoid. Or maybe he did that and we just weren't shown it.