Ok, this is a case of just bad writing, forcing him to say "Oh yeah stop it" like yeah I know guilt exists and all, he would feel guilty to lead her on and pretend to like her or to use her for his good. But this message was a bit much. Some people mentioned "Write hes a friend, he supports it"...
I am gonna be honest, normally I dislike these stories, but the way this one is written just has a nice read to it, it draws me in but doesnt want me to care about every little nano detail.
Can we talk about this chapter, idk why, but I just enjoy the story buildup, it feels somewhat episodic, but not really. But I dont think this series will go on for a long time, since afaik the WN got cancelled or smth
If this were a light novel the title would have been: "One of my 25 new wives is actually quite lewd, but I am too much of an idiot to get that she perverted to the core."