This list includes: » Isekai (transported into another world) » Reincarnation » Regressor » Royalty » Historical » Medieval setting » Leveling-up » Fantasy » God/Goddess theme » Modern with a twist » NO HAREM
When it comes to Manhwa with Male as the MC, I would prefer if they have no love interest at all through out the series or just ONE main partner and no harem. If in any event that I also don't like the said partner then I'll drop the series