[Ciel's arrived at the exact same conclusion, leans up a little closer to Sebastian's face to make his point.]
Pathetic. You and I both know I would never give that order. You only offer that because you know your death would be of little use to me. Try something else.
[Ciel intends to spend the rest of his life with Sebastian by his side, have his last breath of life taken from him by Sebastian's hand. What makes his demon think that he would rather live beyond Sebastian's death? Fool.]