Watching my Asian stepsister use my toy for self-pleasure

I've been sneaking around my new stepsister's room and watching her use her sex toys. She has a collection that would make any adult blush, but the one that stands out the most is a big dildo. Every time I see her using it, I can't help but get turned on. Her tight little Asian ass wriggling on that toy is a sight to behold. The way she moans and squirms, you'd think she's having the best orgasm of her life. I've never seen her face, but I can imagine the pleasure etched on it. Watching her pleasure herself with that toy is a show I'd pay to see anytime. I hope she never finds out I've been spying on her, but if she does, maybe she'll let me join in on the fun.