Seriously, why are japs so interested in the idea of incest? I dont care if they arent blood related, they spent THEIR WHOLE LIFE together as siblings, eating, sleeping, playing together. Even if there are no blood ties, their minds should be imprinted with the concept that they are siblings to the point that the mere idia of wanting to have a sexual relationship should be disgusting to them, ever heard of the westermarck effect??