This artist's hentai logic is usually hit or miss for me, but this is certainly one of my favorites. The sister who's both the witch and gyaru bitch just because. The brother turning into a girl, but it's a no deal and actually a lewd opportunity for the sister. Then sister turned out to be a HUGE masochistic(!) slut. And after all the "actions" the brother is going to stay as a girl because the sister suddenly(?) decides to stop being the witch. It's so fucking absurd, yet it strangely makes it so much better and I just keep coming (heh) to this doujin again and again.