
How old are you? And did we read the same manga? Brother he can't literally let them go because of the rules of the world and because they are hormonal teenagers in the 'harem' ofc anyone outside of mcs pov would think of it as a 'harem' because that is the norm of their world. So him seeing the hero having actual adult women as his harem would make him say that.

Yeah you right, I shouldn't be in the defensive of this because it's actually dumb to talk to you so yeah thanks for making me understand that fighting you is so stupid that I forgot about it thanks a lot hope you do this again so that I can realize that it's you that I'm fighting and not an intellectual
https://www.mangago.zone/read-manga/death_march_kara_hajimaru_isekai_kyousoukyoku/bt/nml_chapter-112/pg-10/
sorry bro but you don't get to say that cause you have a whole ass harem too...