UGSS-024 - Mom Caught Me Watching Porn and Decided to Join In

The heroines are generally quite attractive. It’s the classic trope where she watches with her son, gets turned on, and then pounces on him. There’s almost no plot, so it would’ve been better to add some taboo-breaking dialogue like, 'Mom, I’m dying to have sex,' 'Let me put yours inside,' or post-coital lines like 'That was wonderful' or 'I want to do this every day.' Also, a bit late to mention, but the person in the black and white sweater is Rena Fukiishi (Mari Masaki).