The truth is that it is nothing similar to the above, it is only treated as a group of girls with very varied and peculiar personalities who try to discover this mystery: what is sexuality.
Of course, from the point of view of Japanese culture, in which they are not as open as, for example, Western culture. For them, calling by the first name is a big step, and if you've seen anime, sometimes you need a complete series to kiss you, and here in West it would only take one episode. This makes it more interesting to see how they are going to investigate and discover this world with what it implies (taboo, shame, ...)
The story is quite good because there is room for everything, the discovery, humor, love, ... making a good balance and making the series short, which accompanied by a good soundtrack and an acceptable animation, have made This anime is the highlight of this season. Highly recommended.
