From what I can remember the plot goes like this, there's this demon girl/succubus who fucks a red hair guy, and she ends up falling in love with him because he managed to survive having sex with her, and then the guy saves a queen from being killed by her own husband and fucks her too, and then at the end there's a Royal knight who challenges him to a game of chess and then looses and then he fucks her too. I've been trying to find the name but I just can't remember