It's a hentai movie called Temptation. Unfortunately, this is the only yuri scene, and it takes place immediately after the catgirl (with strap-on) and a dude rape the blue haired girl.
The Plot of Temptation is a College professor has sex with one of his female students. The Dean of the school catches it on video tape and blackmails him into working for her. She has him kidnap and rape girls repeatedly, for the purpose of selling them as sex slaves. This girl was a nurse at a hospital. And the blonde catgirl shows up out of nowhere to help him "break" her in after he's had a few sessions with the nurse. Apparently, she works for the Dean too, though it's never mentioned before this very scene and you only see her once or twice in the background afterwards.
The movie ends with him being asked to kidnap the student he had sex with at the beginning of the movie, and he does, but she loves him so much she lets him break her in.