Well, half-brothers and half-sisters are not related at all, so it can't be considered something bad or immoral. It's no surprise that an adult guy and girl, with no regular sexual partners and almost daily being around each other, suddenly felt attracted on a sexual level to each other. Considering that the girl liked it (the guy then no question), I think they will continue to practice this kind of thing from time to time.
Well with the title as always exaggerated. The video is quiet, there's nothing special. The couple is cool. The ending of the video is great, although the fly was not pleasant to look at. I thought it was going to go to the wrong place. I also want to note the quality of the video, it's really great. Everything was clearly visible, right down to the pimple. In principle it was not boring to watch.