I'm going to recommend the anime, because as a fan of hentai, the sex scenes are well-planned, well-directed, and well-animated. The graphics in the anime are super realistic and highly detailed. Every facial expression that the girls (Luna and Hikary) make is very impactful due to the details. But the anime is not perfect. Although the sex scenes are great from a technical standpoint, there is no good preparation for them. The male characters (Jun and Murakami) simply decide that they are going to perform the act with someone, and it is done; the girls offer no resistance at all. There is no build-up to afantasy to be realized, there is no purpose. But if you like the genre, I recommend watching it.