The cloud that passes across Kieren's expression is more than enough indication of how terribly wrong this is all going. Sirius has seen him upset before, has seen his flash of anger, and he's no happier to see it now than he's ever been.

"Kieren!" He calls out even as Kieren's left the kitchen, the tea still not even to a boil yet. He hears the pounding of Kieren's footsteps up the stairs and calls out louder, "Bloody-- Kieren!"

His own rage flashes then and he kicks at the oven, the clang of his boot against the metal not nearly as satisfying as he'd hoped.