This manga went to shit pretty quickly after it left the magazine it was in. There's no story and barely any decent sex scenes at this point. It's just goblins rping amd killing humans
Void's spatial magic is crazy overpowered. If he was a more serious villain, he could just open a portal behind someone and stab them in the brain or spinal cord (like ikejime) before they even realize what his power is.
Started out as the goofy harem hijinks of an isekai'd Incubus and now 90% of the content is goblin murder rape.
Hope this arc is an exception and not the tone this manga continues with.