Always Another Campaign

When they come to destroy Sir, destroy Narus, then what will happen ? Who will give us hell then ? Will we die with Sir, with Narus ? And the world will only be ZoD, would that give peace to Z ? Am I of any importance to Z ? Or by killing me she will achieve salvation ? I thought she needed good people to kill, that's what gave her purpose ? Or can she survive with no good people at all ?!