User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-31764731-20180327172543/@comment-120.188.94.117-20180331071733

I know penetrate, longinus smasher etc are supposed to be sealed but CxC makes it possible for issei to gain those powers. That's why i assume CxC= Unsealing Ddraig's powers (penetrate, LS,  etc)