Impossible –

The rage that had nowhere to go became destructive impulses that spread to Volumen Hydrargyrum. Kayneth smashed the walls of the corridors around him with his whips of blades.

That base scum made me bleed... impossible! It shouldn’t have happened!

His walk resembling a sleep-walker, Kayneth pursued Emiya Kiritsugu, who had fled. The shapeless mercury lump, taking the place of its master’s heart, followed him, full of murderous intent.

- Fate/Zero: Act 7, Part 3