User blog comment:15sok/How Would Issei Human Friends Feel About His Secret/@comment-6482575-20131217082255/@comment-16281343-20131218001556

If they do discover the natures of the ORC members and wants to be reincarnated as Devils, I'll suggest that they urge Issei to be a High-class Devil very soon so that Issei can acquire his Evil Pieces and trade for Ravel. And with Ravel in his peerage, he can then urge Ravel to acquire her Evil Pieces and reincarnate the two so that Issei won't have to waste his Pieces for them since he also has plans to participate in the games. Problem solved. :D