User blog comment:B214/Talk About What You Want! 2/@comment-16281343-20141025180336/@comment-1359322-20141026014040

Yeah i suppose so. Now i'm really thinking that Rizevim might not be defeated in the Fourth Arc. It might become like this,

Rizevim is on the verge of unsealing 666, then DxD interferes, and DxD somehow successfully seal 666 using Rose's 616. Then we see a truly serious Rizevim claiming that he has been playing too much and should've disposed of DxD first. Following that, news of Euclid's escape is heard and Euclid appears along with the Malebranche. Rizevim leaves with the final words that he will now proceed to eliminate DxD and its supporters.

Note: This is just my scenario, might not be true. ( ._.)