This ending is hilarious and at the same time disappointing that there wasn't a demon lord. That second point is beaten by the fact that there wasn't a reason for there to be one in the first place. Man was that funny though.
TIL there's an anime OVA out there with a similar concept. The "reader/MC" is an M instead though. https://myanimelist.net/anime/37021/Iya_na_Kao_sare_nagara_Opantsu_Misete_Moraitai
Hey guys.... I counted Breast and Panties apart... (only with the first page where the MC ask the girls to do so because there also a few where we can see everything so I did count them but only what the MC asked for lol)
So here is the result so far to chapter 30 (though the total is 28 because of chapter 14 and 27) :
Breast are asked 19 times.
Panties are asked 9 times.
You can conclude whatever you want from theses results.