From both ends

The three of you stand there, unsure of what to do. Your siblings know they have won, and are showing an unbelievable amount of restraint as they wait for your move. You take a moment to look them over.

Amber is still mostly herself, apart from the obvious huge dick. You notice she is taller and has more of an hourglass figure. Her tits have ballooned to what must be at least D-cups and every blemish and ounce of fat have disappeared.

Will obviously has changed more. The only way to identify him now is the gold cross necklace around his (her?) neck. You would expect to feel some guilt, seeing this reminder of your faith, but all it does now is draw your eyes to her equally huge, heaving tits. Just below those fun pillows, her cock rises. It must be over a foot long. You assume this is bigger than average, but you have frame of reference. By all other counts, your brother is now a girl. Her face has become much more feminine, with a striking resemblance to your sister, and her long blonde hair matched your own.

Your two futa-sisters grow impatient and begin moving closer to you. You figure its time to take the dive and join them. Your stomach growns for more cum and you stare at their leaking fucksticks. You fall to your knees and try to decide which cock to suck first. Will makes the decision for you by grabbing your hair and pulling your mouth toward her cock.

Amber takes the hint and walks around behind you. She grabs your hips and pulls you up onto your hands and knees. You wonder how she will get past your tight jeans, when with one smooth motion, she tears them and your panties in two, leaving your cunt and asshole exposed.

Will has now worked her cock to the back of your throat and is pushing for more. Despite your years of Christian upbringing, you instinctively long for more cock in your mouth. You feel an impulse to relax your throat and tilt your head back. Will takes the hint and slams her cock down your throat.

When you recover from the invasion, you feel Amber poking around your taint. You wonder if she'll take your virgin cunt, or virgin ass. The thought comes second nature to you, until you realize you have never heard of butt-fucking before. Your instinct tells you its a lot of fun though.