"I understand now... It is a cursed spear; wounds dealt by it would never heal. I should've noticed this earlier..."

A crimson spear that severs prana, a cursed golden spear, and a love spot below his left eye that attracts women – it was easy to determine once all those are put together. Based on legends, the glorious name praised by the Celtic legends of heroes was actually remotely related to King Arthur. It was quite incredulous that this did not occur to Saber.

"The first warrior of the Knights of Fianna... Diarmuid of the Love Spot. I did not know that the Grail granted the honor of participating in the war to you."

"That's the beauty of this war for the Holy Grail... But the honor is mine. For one that traverses time and space to join the Throne of Heroes due to its invitation would not mistake your golden sword for any other."

The Servant participating in the fourth Holy Grail War, Lancer... the Heroic Spirit of the Celts, Diarmuid ua Duibhne.

Lancer, whose cover was carelessly blown off, narrowed his eyes with a refreshed feeling despite that.

"Competing with the famous King of Knights to avenge your sword blow – Hmph, I wouldn't give this opportunity up either."

- Fate/Zero: Act 4, Part 1