User blog comment:B214/Volume 22 spoilers/@comment-95.90.227.198-20170204105622/@comment-95.90.227.198-20170204110200

Because i also think there are more to Isseis new Body, i dont think that Great Red would do this for anyone even if asekd by two Dragons. He is just not the Type to do this so maybe Issei has hidden Powers that maybe Great Red sealed and only will break whenn issei reach a certain point or when he can withstand its powers?