I was a bit on the fence about playing InSight of You, but recommendations like yours can definitely bump our interest. Any rough estimate of what percentage of scenes in that game are anal?
'Rough' and 'anal' in the same sentence, just a little bit too far apart - I like it!
While there is a limited control over what type of sexual penetration the main 'antagonist' of the story will be corrupted/blackmailed to participate in, anal plays a huge part in her eductation/rewiring. And the scenes are properly hot 3D animations, although with the usual disadvantages that 'HoneySelect' style of rendering offers: unnaturally stiff positions and pornographic closeups leaving a lot to be desired. Hand drawn art is much better at depicting those soft and wet areas in a convincingly erotic manner, without going into the Uncanny Valley.
Percentage-wise, if you play this game right, anal abuse will be one of the main things your progressively degraded boss will experience, including oversized buttplug training and fisting. Plus quite heavy dosage of orgasm control/denial, BDSM, public use and watersports. Flavor-wise, it is equivalent to very edgy rough porn from early 2000s... and onwards, come to think of websites like Assylum, Everything Butt and others.