The premise of this game is that the MC's wife is kidnapped and he's being blackmailed to serve the demons.

This is incredibly stuipd!

You NEVER do what a blackmailer wants!

Also any king with a brain, who had a demon invasion in living memory, would hear about the demon attack and raise an army to go kill the crap out of the new demons showing up!

Oh and lets not forget... the MC could've killed the female demon anytime he was alone with her, ending any chance of them winning in a war.

The ONLY good thing about this game is that the intro sex scene is quite good, which is why it's 2 star instead of 1.