That video made me feel a little ambivalent. :-) I kind of got excited seeing a beautiful naked Japanese woman in front of me, but on the other hand I got a good laugh watching hungry Japanese men watching me having sex - they are all so chubby and round, like koloboks. :-) Where's the famous Japanese slimness? Probably eating in peace, being led away for the last time by American fast food.
I do not know about the indefatigable brother, I think he got tired) Sisters certainly are all on the positive. The way they got caught by their mother and the brother hid, it was well thought out. But then when they went on and the mother, or whoever she is I don't know, was sitting next to them, I didn't understand why they did that. It was nice to watch, especially the sisters, the brother was kind of passive in the clip, he was almost never even shown.