Don't ask what exactly he had been through.
In any case, to avoid embarrassing himself in front of so many Heroic Spirits—like getting whipped in the face by a barrage of arrows and then having them leave—Gilgamesh had simply given up on treatment and decided to wear a mask instead.
"We can negotiate the terms again." Seeing everyone fall silent, Iskandar scratched his head.
"Idiot!" Seeing the other Servants' hostile expressions, Waver, as his Master, had already begun pounding Iskandar's chest with his little fists.
"Fine, let's continue sharing information." Rider of the Conqueror spread his hands.
"Since Saber, Lancer, Archer, and Rider are all here, while Caster and Assassin have already withdrawn, does that mean the one who used that Noble Phantasm was Berserker?" Kiritsugu Emiya said slowly.
"That fits the profile... Causing such a huge mess in broad daylight before the Holy Grail War had even begun—if he wasn't a Berserker, no one would believe it."
"Then there's no problem. Either a Berserker's brain or sanity is always abnormal."
"Indeed."
"Reasonable."
"The other party's Mad Enhancement rank should not be low. He may also be the sort of Berserker driven mad by an obsessive pursuit of justice... He may have been a respectable person in life." Artoria sounded somewhat wistful.
Unfortunately, he had become a Berserker.
"Yes..." Lancer Diarmuid Ua Duibhne nodded.
If becoming Saber's Servant meant receiving the finest of all classes, with most Heroic Spirits of that class having royal backgrounds and carrying the future of an entire nation upon their shoulders, then most members of the Lancer class followed positive creeds such as chivalry, bushido, a king's honor, and divine protection. It was the class most suitable for novice Masters to command.
Diarmuid was precisely that sort of person.
But because he was decent at