Responses
male protags with no harem
http://www.mangago.zone/read-manga/saihate_no_paladin/
http://www.mangago.zone/read-manga/solo_leveling/
http://www.mangago.zone/read-manga/tondemo_skill_de_isekai_hourou_meshi/
female protags with no harem
http://www.mangago.zone/read-manga/kumo_desu_ga_nani_ka/
http://www.mangago.zone/read-manga/suddenly_became_a_princess_one_day/
http://www.mangago.zone/read-manga/the_justice_of_villainous_woman/
light novels
BL https://www.novelupdates.com/series/the-scum-villains-self-saving-system/
GL https://www.novelupdates.com/series/i-favor-the-villainess/
hi recommend me some isekai anime, manga or novel pleeeasse thank youuu! preferably if it doesn't have a harem