Well, the 1.6 have 3 main characters to play and 3 secundary characters, the main story is not finished yet, but you have some hentai scenes around 26 more or less. I think you could give it a try and see if you will like to follow the game or you could check youtube, I don't know if the videos are upload there now (maybe the person who played the game removed them) with night Lessons Nikraria should show you some gameplay.