It's a common phrase when referring to household pests (even in our world) especially like termites, rats, roaches. Given that MC's perspective is always about "household chores" (he is only ranked S in the field of mundane tasks), it really was funny that he saw the demon as nothing more than a mere household pest 😆I thought it's about goblins. But cockroaches also make sense.
Maybe his village has been wiping them out?Whatever horror is the MC talking about with the whole of High demons being dead BTW?
Now I can only ever imagine 5hr high demons cowering in fear out his village going out to exterminate them like some invasive species in the wild.Maybe his village has been wiping them out?