It took you the whole of summer, but you finally succeeded in your plan. You made yourself an escape proof chastity cage. Made from steel but formed perfectly to your body, you were now stuck in a creation of your own design.
It just started as a game of dress up with your childhood friend, but before long she had you in a collar, dress, and chastity cage. She teased you that it was for her safety, but when she went home and didn't unlock you from it, you started to realize