User blog comment:B214/Light Novel Volume 16 spoilers/@comment-1392308-20131019074749/@comment-1359322-20131019090356

That's why they are having Sun Wukong train them, so that they can fight without the Sacred Gear. And you think Azazel would just allow a situation where Sacred Gear possessors are useless against Rizevim. Azazel is bound to find a way to negate Rizevim's Sacred Gear Canceller.