So first, he was blabbing about the so-called ‘almighty device’
Then Grell give up first.
But, Ronald stop him as the device is important and the Viscount just continue his speech.
Sebastian can’t take it anymore.
Yet, he continues his rambling as the moment become very crucial.
As Grell was stopped by Ronald, Sebastian was stopped by Ciel, and Ciel stopped by Sebastian. His life was still spare. But then, he keeps going on while everyone is fighting.
His only hope, Ronald Knox was finally lose it.
Just then, when he reached his final sentence,
They all snapped.