4.7
Step-Sister Emily would open with…
Emily surprises you by sitting at the table in a rather skimpy outfit, holding a book. When she sees you, she says "After I found that chastity cage in your drawer last week, I thought I would start reading up. Along with this book, I bought a new, smaller cage that is advertised as inescapable and the lock is integrated in the cage. It also has some spikes that I can screw in for strategic purposes. So unless you want me to tell mom what I found in your room, Strip. My new cage goes on right away. Then after I adjust some of the spikes, you will make me cum with your tongue."
Or start with