@No1Kenkaku - I'm just waiting to see if the author also tries to pull off that really creepy "it's okay because we're both female's" nonsense. You know, the molesting and whatnot other manga's tend to do when it involves two girls.
This isn't going in the direction I was hoping when started reading (step siblings incest), I'm probably going to drop the series and only check how the plot is developing from time to time.