[Gilgamesh makes a habit of sparkling out when the rest of the household appears to care for Tokiomi. He has no interest in answering to them - not to Kiritsugu, not to Byakuya or Kariya's grouching, not to Illya's demands, and most certainly not to Shirou's "are you okay?"s. Now he cannot conveniently ignore them, though he makes sport of calling Shirou to his aid with a dagger or two from the Gate of Babylon.

But when they're alone and Tokiomi stirs, Gilgamesh is by his side instantly. He holds Tokiomi's hand and tries not to shiver himself - He refuses to lose this friend.

So when Tokiomi sits up, startlingly lucid, it takes mere moments for the King of Heroes to appear, his expression all faux amusement]

So you finally wake. You kept me waiting.