Part 6 -
For a good quarter of an hour I was left struggling on the bed.
The gag was too well-tied for me to speak, and the bonds were too tight for me to get free.
Eventually, I gave up and decided to just lie there and wait for the girls to return.
Return they did, after another fifteen minutes.
This time, along with Tuula, Phoebe and Saskia were too other girls.
The knockout girl with the dark hair in a skimpy bikini was introduced as Millie, and the shy little redhead in a one-piece was introduced as Izzy.
"Now that we're all here, I can tell you our plans for the night," she said to me.
The girls all looked excited, and it was clear this attack had been planned well in advance.
"Tonight, as it's my birthday, you are going to be my gift to myself. You will be our slave, and do whatever we command for the duration of this sleepover. Clear?"
I shook my head, and Tuula sighed.
"I see that you're playing hard to get. Fine by me." She turned to Saskia and Millie.
"Do your stuff," she said, smiling.