captainmisery yes that’s a very hot scenario that is underutilized.
I would also add to this your wife watches while you fuck your stepdaughter or your stepmom watches while you fuck your stepsister with less focus on the step aspect.
You can also do variations of freeuse in this scenario.

a year later

Anastasia Oceane does some amazing videos where her "stepmom" walks in on her giving a BJ and they just casually have a convo whilst she continues in between replies.

Shame it isn't in VR.

Yup, having any woman watching while fully clothed and not being sexual would be great - especially if she has a certain look on her face, whether it's shocked, disgusted or intrigued

It would fit right into the voyeur kind of public themes, something that is missing from VR

This video was good in that context https://www.sexlikereal.com/scenes/free-use-40372