This was a pretty good 3P movie and I would give it a solid 8 out of 10 or even close to a 9. The girls were so beautiful and they paired so well together. They were basically all over the place, perhaps thanks to the good camera angles.
Special mention to Miru, who is ridiculously pretty, very close to a perfect 10 girl. Assuming one likes slender girls w/o boobs. Her cowgirl style was awesome at minute 02:21:00 and afterward. She improved a lot and she has become one of S1 best assets.
Great video. We need more S1 co-star collaborations for sure.