"This is a great opportunity to display the majesty of a true hero. Please, give the command!"

The King of Heroes gave Tokiomi a glance of displeasure. Then he swung his right hand, which was propping up his chin on the edge of the ship. Four swords and spears appeared in the air next to him. The shining primeval Noble Phantasms unleashed a thunderous roar, and flew to impale the filthy mountain of meat that wriggled down below.

Saber and Rider reacted immediately and jumped away to avoid being caught in the attack, but Caster’s sea monster was in no ways so agile. The four Noble Phantasms hit it head on. Their power, enough to split mountains, blew one-third of the giant beast’s body into nothingness.

It was an unprecedentedly mighty impact, but Caster laughed out loud with an even more piercing sound.

"How can it be...?"

Tokiomi was dumbfounded. Beneath him, the wriggling meat mountain swelled up like a balloon, and repaired the damaged parts as he watched.

The physical structure of the giant meat lump was perhaps as simple as an amoeba. It has no bones or organs, and thus no weaknesses. Its movement won’t be impaired no matter which body part is destroyed, and it will speedily restore the destroyed parts relying on its mighty regeneration ability.

- Fate/Zero: Act 10, Part 2