You made it ten minutes without cumming when she was teasing you, but now she has a new challenge: don't cum during this next ten minutes for her footjob with pantyhose. She'd never touch you with her bare skin until you've really truly proven yourself, so of course you want to earn it. She alternates rubbing you fast and slow with the pantyhose on her feet. One, sometimes two feet at the same time. She loves edging you this wsy. You're struggling to hold on at times but you are happy to please her and earn your cumming. That's when she tells you that with chastity and being unable to cum, this would feel even better. Perhaps she would even Give you a barefoot footjob. But could you make it through a full week at the school, her pantyhose in your pocket every day taunting you as you were locked in chastity? The thought of her actualy letting you cum after a week does sound like it would e more fulfilling though. So you agree. Once the ten minutes are up, she pops up delightedly to get your cage and take off her pantyhose for you to keep in your pocket this week.