The characters aren't sexy, so not aroused.
Don't care about incest, as long as both consent who is everyone else to tell them they're wrong?
We live in a truly deplorable, degenerate age of faggotry everywhere, so why, of all things, should this be weird or offensive? The traditional family unit basically doesn't exist any more, so it only makes sense that siblings should be able to approach one another as lovers. Why not?
Research shows that the chance of offspring with mental defect only rise by 3% anyway, it's only hereditary diseases which are a danger, and they have 50% chance of passing those to their children regardless who they fuck.
So why care.
