Kait - Fill the Jar or Else20

Your parents left for a week-long trip to Rome, leaving you and your older step-sister Kait alone in the house. With no supervision and the place completely to yourselves, Kait decides she wants to seriously improve her sexual skills. She sets a clear challenge: every time she makes you come during the week, the load goes into a mason jar she keeps on display. If she manages to fill the entire jar by the time your parents return, you get to do whatever you want with her—no limits. If the jar isn’t full by the end of the week, the punishment flips: the final day belongs entirely to her. You have to do everything she says with no arguing and no limits from your side. Either way, Kait wins something, and she intends to enjoy every teasing, playful, and deliberate step of getting there.