"Saber...?"

After Irisviel confirmed that it wasn't any other person but the girl that was the King of Knights, she was completely relieved by a sense of safety and nearly collapsed again.

"No! Keep your consciousness! I'll go call Kiritsugu right away. Hang on until then!"

"...Kirei.... Where is the enemy?"

Irisviel asked with a faint voice. Saber frowned regretfully as she answered.

"He escaped. If only I was here a bit earlier, this wouldn't have happened."

"...and Miss Maiya?..."

"Although she's also heavily wounded, they aren't life threatening. Yours are worse! The amount of blood coming out from this - "

Saber stopped halfway, astounded.

The blood that flowed out of Irisviel's abdominal wound until now suddenly stopped. Saber carefully rolled up the torn clothes and saw that it was all stained with blood but couldn't find any trace of the wounds on her smooth skin.

"—Sorry, I scared you."

Irisviel got up painlessly from Saber’s arm that was holding her up. Her face ought to be pale, but it already regained its color. The recent wound seemed like a mere illusion.

"Irisviel, What's--"

"It should be alright. Don't worry. Compared to magecraft used to heal others, healing myself is pretty easy... from the beginning, my body wasn't created as a human's body."

"Ah..."

As Irisviel smiled gently towards Saber, whose eyes were wide of surprise, she apologized in her heart for lying to this incomparably trusting knight.

"It's actually thanks to you, Saber..."

Although Irisviel's body, from magecraft's perspective, is artificial, the art of self-healing when the practitioner is unconscious wasn’t added in. What healed her was a miracle that had nothing to do with Einzbern's magecraft.

The Noble Phantasm Avalon • All is a Distant Utopia – it heals all it's bearer's wounds, and even stops his aging. The sheath of the holy sword Excalibur. The artifact used back at the Einzbern's castle to summon Heroic Spirit Artoria was now sealed inside Irisviel as a conceptual weapon.

Normally, it should be a trump card that the Master, Kiritsugu, should equip. But then, serving as the front line substitute Master Irisviel's protection, he left this utmost defensive Noble Phantasm in the hands of his wife. Anyway, if its real owner Saber wasn't near supporting prana, the sheath wouldn't have any properties. To Kiritsugu, who decided from the start to act separately from Saber, it was a useless thing.

Kiritsugu, who didn't trust his own Servant, had carefully asked Irisviel not to tell Saber about the existence of the sheath for insurance. But Irisviel felt very uneasy in her heart about forcefully borrowing the Noble Phantasm of the King of Knights.

Even so, when its effects were confirmed, it was a truly astounding power. Before Saber arrived, Irisviel was undoubtedly in a critical state. Just by the touch of the hand of the king of knights, the wounds suddenly healed, and her strength rapidly recovered. It was nonetheless known as a miraculous Noble Phantasm.

Her Magic Circuit that Kirei broke by brute force should have malfunctions, but now it hadn't any problems. So now she should be able to smoothly use magecraft as always.

- Fate/Zero: Act 7, Part 4