Hello. :)
Before I forget, I just wanted to tell you that I really love your Overlord story. It's easily one of my favorites about this series.
You do a fantastic job in portraying each character from the franchise, it honestly felt like I was reading their canon-selves so to speak.
And trust me, at least from my own experience, it can be difficult for writers to do that.
I have no problem with making characters OOC, btw, it's just rare to see characters being portrayed as believably different because of their experiences with the added MC while not making them too OOC, if that makes sense.
If it's not too much trouble, may I ask if I can share a small idea for the story.
Nothing to do with changing the plot itself in any way of course, I assure you.
It's just something that came to mind that Y/n can possibly do to pamper his lovers, present and future, in return for all the pampering they've done, and will keep doing, for him.
It's completely fine if you say no, I did just come outta nowhere with this.