First girl's box. Right in there.
From Create Your Own Story
Gripping the thick hips of the buxom girl, you don't hesitate on ramming your cock home. You slide into her until you can go no further, feeling the tip of your dick slamming into her cervix. She growls and reaches back to dig at your hips with her fingernails, and pushes up on her toes to desperately try to get you deeper. She's so hot inside, it nearly burns your flesh, and as you look down to see yourself buried within her, she oozes that sickly green puss around your shaft. The smell is rancid, and just as you think to pull away, the blonde is behind you.
"Fuuuucckkkk herrrrr," she growls, wrapping her arms around you tightly. You swallow the lump in your throat, fighting back the urge to vomit, and work your hips slowly. Each thrust forces more of the green mucous out of the woman, and it drenches your thighs, spilling down to your knees. "Harderrrrrr," she groans, and you pick up the pace. You start slamming your cock into her. "Hhhhhaaarder...." she groans. "Tear itttt up...tear itttt outttt...." she groans. You take hold of her hips and smash into her at a blinding speed. It feels wonderful, but the stench is hard to stomach. Still, you pump away, tightening your grip on her hips as you close in on an orgasm.
"I'm going to cum," you say, mostly out of the habit of warning your partner. You feel your cock pulse, and you shoot your first torrent of cum into the woman, and she growls as you do.
The blonde lets go, letting you pump away desperately on your own. Your knees go weak as you spurt your last gob into the buxom infected girl, and you pull free as soon as your finished. You stumble back and try to get away from the stench, slipping on the puddle of goo that's amassed on the floor. You land on your ass, and both women turn to watch you. "Noooooo runnnn," the blonde says. "Youuuu are wiiiith us nowww..." she cooes, reaching over to wipe at the buxom girl's slit, then lifting to her lips and licking the mix of your sperm and the mucous.
She's right though. Within minutes the sickening scene begins to delight you, and your urge to fuck both of them becomes overpowering. As you spend the night filling their holes, your thoughts become increasingly violent, and when the blonde girl finally hands you the scissors, you hack them both to pieces while fucking them stupid.
By the next morning, you have no memory of who you were or what you wanted in life. It's all been replaced by an urge to fuck, to kill, to eat, to fuck some more. Your body is covered by painful blisters that only cease their pain when you're carrying out some heinous act, and it's only a matter of time before you find Cassandra and Melanie again. What you do to them is so horrible, it can't even be written about.
It's the end for you. There are no more choices for you to make beyond your carnal drive's urging.