She is one step ahead of you.

Kako lies down on her stomach, and pulls her breasts out to the sides so she is laying as flat as possible. Her butt is in the air, as some of her cock is propping up her crotch. "You got me fucked with your normal cock, now I should be loose enough to put MINE in there," she says knowingly. It's like she read your mind. You grab her cum-soaked cock head, and jam it up there, like it was jammed up inside you so many times already. She howls in pain at the unexpected penetration. Only half the head gets in, and she begs you to stop. "I can't take anymore, you are going to break me!" she cries out. "I havn't ever worked on my ass before, I am not as good as you, don't try to push any more in!" You think for a moment and realize the wisdom of her words. You pull her cock out a bit so you can push a few fingers into her ass instead, starting small. You look down at her cock, and suddenly realize you feel empty.

"Don't worry Kako, I know what to do with a mean ol cock like this," you say with authority. Then you sit on it, driving the head back up your ass. It hurts again, but not the flash of white-hot pain you felt the first time. This was a soreness kind of pain. You position your cock at her ass instead, and stradle her cantelope sized balls and tuck them between your legs next to yours. Feeling a sexual frenzy overtake you, you push into her ass. You use one hand to aid your bouncing off of Kako's giant bubble butt, and with the other, you try to fuck your ass with her cock. It only moves a little bit, but your mind is gone. You lean down and lie on top of her, grabbing her breasts on either side, and grab hold of the nipples and start to tug on them as you bounce up and down on her ass and her balls. You begin chanting, "Fill me, fill me, fill me..." Kako turns her head and looks wide-eyed at you. She smiles wildly and begins the same frenzied chant. She takes hold of her own nipples, freeing up your hands. She squeals, "Put your fingers in my ass, as many as possible! And FUCK me with them!" She is definately not in her right mind either. Good, you think as you jam 5 fingers alongside your cock into her ass. You hear her moan loudly, and her balls underneath you start to pulse. Her cum sprays into your ass again, and that sets you off. You jam an entire fist along with your spurting cock into her ass. She yells out for more, and you give it to her. You are only able to jam 2 more fingers into her before you realize she still isn't loose enough. You smile at your triumph, and lean back and let your ass fill from her latest cum. You smack her ass a few times after you withdraw, to watch her jiggle and help her orgasm along. After Kako stops cumming, you resolve to leave her cock up your ass, to loosen you up. You want to be able to slide her head in and out at will without pain, and this is the best way to do it. You slide your hands all around her slick cum-covered ass, and rub your face in between it and lick around. "Kako, your own philosophy on ass stretching is going to have to apply to you, too," you tease. She sighs and nods. "I have a longer road ahead than you my talented man." She gets up, and jams her face between your ass cheeks, worshipping the ass who can take her inside. You stick your ass out to give her better access. She licks her own cock around where it enters your ass. She rubs her fingers around, pushing a few inside again. She works all 5 fingers of both hands into you this time. You rub your own normal sized dick while she does her thing. You turn around and look down at her over your shoulder. She looks up and your eyes meet.