A truly excellent hentai, one of the best ones I've ever seen. The art style is outstading and faithful to the manga. Keiko is one of the best charcters developed for a hentai. Seriously. She is charismatic and very likeable. Regarding the sex scenes, the entire episode is focused on oral sex. All the scenes are good, but it doesn't mean that it is the only type of sex present, in fact, my personal favorite isn't focused on fellatio. The only bad thing about it is the fact that there is only one episode, but okay. If you're not bothered with incest, oral sex, cervical penetration orother specific things, it is a must see.