Berserker threw away the machine guns, trapping the blade of Invisible Air between his bare hands before her eyes. That consummate skill was unbelievable on two counts: the first was that he had used an impossible stance to respond to Saber’s follow-up killing blow, and the second was that he had done so even though it was impossible to perceive the path of Invisible Air. But the Black Knight had grabbed the white blade with his bare hands to seal Saber’s attack as if he had known every detail of Saber’s sword, from the shape to the length, like the back of his hand.

Saber suddenly realized the fatal danger of having Berserker come into contact with her weapon; she shuddered violently. She banished the astonishment of her heart to the back of her mind and used all her strength to kick out towards the black knight’s chest. Berserker, who could not take the blow and was forced to retreat, released the precious sword, allowing Saber’s beloved weapon to narrowly escape the danger of being corroded by the other’s black magic.

- Fate/Zero: Act 16, Part 2