.
Surrounding the real JAV lady in the center, a couple of side ladies (from RCT-736) that probably have not had enduring Side Lady careers. (Although... who knows. Perhaps one or both once dipped their toes into the real JAV Lady Lake.)
In SHKD-530, she plays the mother of a boy who gets tutored by Kaori... who has no idea the boy intends to do a little tutoring of his own.
EDIT:
I need to examine the movie to corroborate whether she is the same actress, but there is a Side Lady who plays the "Jealous Employee" in Assault of a Hot MILF Executive - Set Up By a Jealous Employee... [HAVD-874], starring Kaori Fukuyama; a little discussion.