The pixel art and character design is cute, the premise of the plot itself is fair enough, but the gameplay, overall plot and especially the sex scenes leave a lot to be desired. The sex scenes consist of a mix of awkwardly drawn x-ray scenes and what can only be described as sex scenes with a ghost, since the male protagonist, penis and all, is invisible in them, leaving you staring at the female partner with her legs spread open and her spread vagina pulsating. It's odd and not very arousing to say the least.
The plot's premise is good enough - you play as the prince of a bakemono kingdom (for those unfamiliar, this is a sort of spirit being or "yokai" from Japanese folklore, that take the form of animals, or in this case a sort of furry-esque being) who is having his "coming of age" ceremony, meaning he has to mate with all his (sisters? I didn't quite understand if he just refers to all females this way or if they are actually meant to be his biological siblings). A few of the sisters aren't keen on the idea and you have to do things for them to win them over. A couple others are more than eager.
Unfortunately, there really isn't much to it other than go to location, click, go to location, click. There's not really much of a puzzle or having to properly guess anything. It'd be much better if there was more of a romance system to it, perhaps one where you have to choose certain girls over others unless you make the right decisions earlier on.
Overall a decent concept for a game but where it falls short is in gameplay, plot and sex scenes.