Forming an even better position

Showing some surprising skill, Donna ties your step-sister's legs to themselves, attaching the calves to the thighs with some rope. Where did Ms. Innocent learn how to frog-tie someone?

As for her arms, they are bent up behind her neck and tied together. A line is then tied just under her breasts and the remaining rope goes to her arms, anchoring them in this position.

"Impressive stuff," you say, "May I ask where you learned it?"
"The Internet," Donna replies, "I had the Lee Sisters help me when I started to get interested."
"I'm sure you have some stories to tell me later. For now, tell me how you want this bitch."
"Oh, that's even better than the tie..."

She explains what she wants to do and you're on-board! This should be fun...

You place your **** 'sister' on top of Ms. Tan's back, the sneaky Teacher still having to pay for her sins. You smack the former's tits to wake her up.

"Ow. What the hell?!? Donna- how could you?!?"
"You're a manipulative bitch, just like that Teacher," Donna replies, spanking the Asian woman, "He's honest in his intentions and he's going to let me get my full ****- on both of you."
"You're both going to jail for this!"
"I think we need to shut her up," you say, "I have plenty of gags if you would like one."
"No, I've got it covered..."

The once-shy coed steps over the bound pair and plants her pussy right on your step-sister's face!

"If you bite me, his cock is going in your ass," Donna says, raising back up for a second, "Got it?"
"...yes."
"Good. Now make me cum!"

Donna resumes smothering your former-partner, while you enter her pussy. It's pretty wet from the recent actions, so need to prep her.

To finish off the set, Donna leans in and starts to make out with Candace, who happily responds with strong kissing of her own.

You finally get to live your dream by fucking the hell out of your step-sister. She's nice and tight! Maybe she's not as much of a whore as those guys in School said.

You wonder...