Responses
Not really Isekai but it is fantasy with no romance so far
https://www.mangago.zone/read-manga/academy_s_undercover_professor/
You can also read the official translation on webtoons
Isekai and Fantasy. No romance or harem involved
https://www.mangago.zone/read-manga/pick_me_up/
Isekai/fantasy recs? I’ve never read any before because they look boring and I’d prefer one without romance if possible