I haven't read this manga yet, but looking at myanimelist & AniList, this manga isn't listed as a girls' love on either site, so did someone add the wrong tag to this manga here on MangaDex?
Everything was great until they introduced the SeXUal HArasSMenT girl. Why? We were all having a good time. MC's IQ went down by 20 the moment she interacts with that girl for some reason, pretty annoying to watch.