Try to salvage the situation

You sit in your chair, stunned at what has just taken place in front of you. Emily wasn't supposed to be home for hours. And she didn't just discover you jerking off. You jerked off with her panties, moaning her name. And not only that, somehow she was able to find your chastity cage. A cage you bought once in a crazed horny whim, and was too ashamed to ever use, so it has been gathering dust in your drawer ever since.

And now it's in Emily's room. Emily has your chastity cage. There is no way that you can ever talk your way out of this. You ponder your options in this situation, but there's no good outcome. You sit in your room for what feels like hours, before you put some pants on and knock on Emily's door.

"Get the fuck away from here you freak!" is all that you hear from the other side of that door.
"Please Em, I just wanna talk.. I can explain this" you say, letting a lie slip. Theres no way you can easily explain what has just happened.
"Fuck off John you disgusting freak" she replies from behind the door. You hear that she is visibly upset, on the verge of crying. "I'll tell mom and dad all about this"

You freeze up. Not only did you upset your little sister, but if she tells your parents about this, it might be the last drop they need to kick you out of this place. Once again, you blurt something out without thinking.
"Please sis, I'll do anything"

You are met with a minute of silence, before you hear footsteps, and then the door opening ajar, your sisters green eyes meeting your gaze for the second time today.
"Anything?"