I once saw this kind of loop in Guilty Hell Airi hentai game, and it looked very good, so I gave it a try, kind of different but looks nice.
I once asked a girl to try this, but she was stuck and couldn’t move at all in that posture, ha ha ???????? (she was kind of a stiff,fragile style, not the athletic kind)
But who cares, this is porn game, if it looks good, it’s all right.