There was a secret grimoire on the bookshelf of the owner of the mansion. It was a mysterious list of spells to summon demons that have been handed down since ancient times. And the spell he read out was a spell to summon a terrifying succubus! Voluptuous breasts and bouncy ass... a man targeted by this demon who has everything that fascinates a man can never escape! He will have his sperm squeezed out until the moment his life is spent!