Your cock slides easily inside her.

You point your knob against her anal ring you have been playing with and press gently against her bunghole. Your cock slides easily inside her and Rikku pants heavily. You pause, your prick deeply embedded in her bowels. Like any anus, she is very tight, the sphincter strongly squeezing your prick. After some seconds with your dick shoved all the way in, you suddenly feel a perceptible looseness of pressure over your shaft.

It seems that Rikku has relaxed and her rectum has got used to her intruder. Very slowly, you draw your cock back and then shove it in again. With each movement you increase the speed and the strength of your stroke. You slide your hands under her chest and grasp her tits, gently squeezing them. Rikku returns your pistoning in her ass by sensuously swaying her butt.

She pants heavily and murmurs words of encouragement, begging you to push harder into her backdoor. Finally your aching balls give you signs that they are ready and can't stand anymore and a continuous flow of jism is expelled from your prick deep into Rikku’s bowels. You lie against her back exhausted, your dick deeply embedded in her butt.

Her anal ring contracts, chewing on your dick till it is soft enough to withdraw from her anus. As good as being inside Rikkur are the moments afterwards when you hold each other in your arms, slowly kissing and caressing and exchanging words of love. "Did you enjoy it, Rikku?" you ask. "Yes! It was very good, John!" "You really like it up in your butt, don't you?" "Oh yes, I did even get an orgasm!"