Tina's

That's bad. Why would Kim head to Tina's room? And now, what should you do? Actually, the only rational action is to enter and to see by yourself, but you're honestly scared of what you'll find. If Kim is aware of what you did and tells Tina, you're done: in no time you'll be the perverted guy who has a sister complex, and you're family will despise you. How could you justify yourself? Arguing that Kim was just too hot to pass up? The hard truth is it's not just her: you also find Tina appealing and, even worst... your mom. So when you discovered your new power, for a moment you dreamed you could satisfy your taboo desires.

"Instead I guess I should enjoy it as long as I can." You think, groping Kim's Boobs. Her hardened nipples sprout from your top, and you instantly know how much you will miss them. But again, you can't really say you are sorry: you love your family, but in your own way. Furthermore you thought you could get away with it without hurting anyone.

While you hesitate, you start to hear something: at first is a low grumble, but then it grows up in intensity and frequence. It comes from Tina's room. You're perplexed. You gulp and finally you open the door; what you see leaves you speechless.

-Fwah!- She moans while stimulating her clit with two manicured fingers. You immediatly feel excited at her perv expression of pure pleasure. You're astonished too: her moans started after Kim entered, so it must be her fault; besides, Tina is too reserved to do such lewd things, you honestly thought she was asexual or something. She never even had a boyfriend! But it can't be Kim, can it?

-Fuck fuck fuck! My sister's! My sister's! Aww~- And then she winces like she's been electrified, she tilts her head back and fold her torso in the air, so you can see her pussy flounder a few seconds and fall down. You find yourself fingering throught the fabric of your panties with one hand, while the other one is stimulating your left, erected nipple. That was so unexpected... and so hot!

In this moment Tina, or whoever she actually is, realizes that she's not alone anymore thus she looks at you upset.

-Kim?-.