Yes

You scream in defeat as you read aloud the words on the page. "KUROXE! DRAENECUS! THE GREAT CORRUPTER LILIN! NOW, PLEASE STOP!"

Energy explodes around you as figures shrouded in smoke leave the book, cackling as they go. The monster that had **** you to your knees regards you for a second, pausing and leaving its cock motionless in your ass. It smiles before forcing your head down and fucking you even harder. You cry in agony as the cock keeps thrusting into you. Your ass is burning from pain, but she doesn't care and she continues to slide her slimy rod in and out of your tight ass.

After what seems hours, the monster gives a screech of monstrous pleasure and unleashes its load inside your ass with one final massive thrust. With all her seed of being blasted deep into your body, you let loose a small load from your limp cock despite all the shame and pain, which lands right onto the book. You can feel the evil seed seep into your flesh, corrupting your human body and leaving you feeling filthy and desecrated. Although she she doesn't retreat immediately from your cock, the demon eventually leaves your stretched asshole and puts a taloned finger right above your ass.

She hisses something incomprehensible and the area where her finger is touching begins to burn. She's branding you, you realize as the shape of a pentagram shimmers onto view on your skin as if it were some sort of demonic tramp stamp. With her task done, the demon stands up and melts into the shadows, giving you only a parting shriek that resembles a cackle more than anything else.

After a long period of recovery you stand on two shaky legs. You can feel the slight shudders in them and there's still the painful burning feeling in your ass. "Oh god... what have I just done?"_ _What did I just have done to me?

The attic is now bright, whatever dark presence that had inhabited it is now gone. You look into one of the old mirrors in the room and notice your skin has now gained a barely noticeable soft purple tint. Queasy, you turn around and look at the mark the monster left on you. Its red color, almost blazing, stands starkly against your pale skin, but that's definitely not the only surprise you get in your backside: a short forked tail sprouts from the center of the pentagram.

Your eyes widen in shock as you grasp it, it feels like flesh and if you concentrate you can wiggle the tail around a bit. "Shit, shit, shit... this can't be happening to me..."

A glint catches your eye, returning your attention to the mirror. On its frame hang a few pictures - were those there before? Moving a little too quickly towards them, you gasp the moment you realize your chest feels heavier and protrudes out a bit more, but not with muscle but soft fatty flesh. Your sensitive nipples send waves of pleasure down your body and you grimace at the thought of having tits, no matter how small they may be.

Gingerly steeping closer to the mirror, you take a look at the pictures. One of them happens to be of your grandpa, the owner of this attic and presumably the book itself. He had died of mysterious circumstances, but after what just happened to you... well, you can guess pretty soundly what had really happened to him. The picture that had caught your eye is of a succubus - even through the photographs you can make out the evil glint in her eye. The succubus herself seemed to have been caught unaware when the picture was taken. There is writing in black letters below the picture. "EXTREMELY DANGEROUS. IF ESCAPED THE WHOLE WORLD IS IN DANGER."

You gulp. It's only beginning to sink in you that you just put the entire world in jeopardy because you couldn't take a dick in the ass. If the impending doom wasn't so terrifying you would have found the situation kinda funny. Suddenly, a loud crack shoots across the room, breaking the calm silence into pieces. You flinch, startled, and look at the source of the sound. It came from the old book, still laying flat on the floor and when you cautiously approach it despite your misgivings, the words begin rearranging themselves.