Is the story that bad though? I'll agree its no Berserk but I think the writing is slightly better at least than the generic fantasy isekei/iyashikei/"wish fulfillment" type thing.
Yeah, the trappings of a harem are there, but the characters are slightly more complex than the typical. In most stories of this type other male characters tend to be either absent or one dimensional, but in this one both the heroes and the villains have their own stuff going on.
Heimbritz is more than just "initially hates the protag", he's a genuinely nice guy after he was beaten by Beryl and IMO Fissel might be tsundere for him. On the other side, Schupple, despite working for the evil necromancer, seems to have a good heart beneath it all, even mourning for the thief/assassin who killed himself a couple chapters ago. It's a bit, just a bit, more depth than most cardboard moustache twirling villains get in these sorts of series.