User blog comment:B214/Light Novel Volume 16 spoilers/@comment-1392308-20131019074749/@comment-6096197-20131019084526

Yeah. DxD vs 666 do sound like a epic battle. but don't forget strongest evil dragon still there. the third super devil is there too.. what's more 666 is a beast that could rival great red. so i am like. wish for ishibumi to focus on rizevim and crom cruach first. because releasing 666 a beast that could rival great red. and for them to defeat it. they need a fucking big boost in power. and i don't wish for them to get a fucking big boost out of sudden.. so.. i would prefer if 666 is a last boss. and rezevim staying till the end of the novel. and last battle of the series would be everyone in DxD join up their force and counter them. that seems better. because by than. everyone would have much more experience, much more stronger.. because from what we seen here. even albion and ddraig now is just in. friendly rival status. no longer those red vs white.