User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-39.43.139.172-20180501011855/@comment-89.164.135.31-20180501081443

The info came from the Japanese wiki so it must be true. Maybe we will get a confirmation in a later chapter. But it wouldn't make sense that Vali could use full power EJOD after it was stated that he was unable to adapt it in Vol 21.