Amateur Russian stepsister discovers my masturbation and assists in orgasm

After a steamy shower, I couldn\'t resist the urge to indulge in some self-pleasure. Unbeknownst to me, my stepsister walked in and caught me in the act, her panties now in my hand. Instead of getting mad, she joined in, helping me reach new heights of ecstasy. This homemade, amateur video showcases our wild encounter and my intense climax.