This one http://www.mangago.zone/read-manga/1_2_prince/
There is a novel as well
I was just reading this 2 minutes ago. http://www.mangago.zone/read-manga/dungeon_reset/
And here if you want a WTF one http://www.mangago.zone/read-manga/i_became_the_mother_of_the_strongest_demon_lord_s_10_children_in_another_world/
(Sooo over the top, I laughed a lot - but maybe my humour is weird X’D)
Thx x
Can anyone recommend me some not-well-known isekais? Preferably no romance or harem thanks x