When my excellent sister-in-law made sure that no one was there, she closed the curtains in the room... took out a thick dildo and put on VR goggles! She talked to herself while immersing herself in a naughty video, exposing her nipples and deep kissing in the virtual space! She masturbated while playing with her pussy! She fixed the dildo to the floor, sat down on herself, fixed the dildo to the floor, and writhed in agony in a cowgirl position! I couldn't help but see the ridiculous disgrace of my sister-in-law bending over and using a vibrator! "Ahhh, it's so amazing! It feels good! Right there! It feels good!" What are you doing, sister? "What! Were you watching? Where were you watching from? How long have you been there? Did you see the whole thing?" In such an awkward situation, the only thing my sister-in-law said was, "Promise me you won't tell mom and dad... but in return..." My sister-in-law, who was seen by me masturbating in VR, said she would do something naughty in exchange for keeping it a secret from our parents, and the condition she gave was a handjob...! My usually demure sister-in-law got turned on by my hardening dick and although she was trying to hold back from putting it in, gradually things started to fall apart... In the end, she let me put it in her horny, dripping pussy!