User blog comment:Ixarising/High School DxD Dream Battle/@comment-112.211.199.137-20140207162046/@comment-16281343-20140207170748

It's unstable and consumes a lot of stamina, but not to the point where Akeno can drain it that much. And even with that, Issei can take down Akeno before CCQ is released.

Issei was able to battle Cao Cao with CCQ throughout the fight.