(Note 2 is a little long today. This is the author's personal interests getting the better of him, so apologies to all readers in advance.)
--Main text--
Sovell tried to smooth out his tightly knotted brow, but when that proved futile, he stopped struggling with it.
"Fine. An unexpected turn it is."
He casually snapped his fingers, and his cold-weather clothes instantly reverted to his classic white ceremonial robes.
"A pleasure to meet you, all five of you. I don't know why summoning four Servants brought out five people, but as a show of good faith, allow me to introduce myself first..."
Seeing that the man before them seemed to have no hostile intentions, the Servants, who had instantly gone on guard when Sovell resumed his Heroic Spirit form, gradually relaxed.
"My name is Sovell Pendragon. I was a prince of Britain fifteen hundred years ago, as well as the chief mage and Fourteenth Seat of the Round Table serving His Majesty King Arthur.
"I manifested in the Caster class during the Fourth Holy Grail War in Fuyuki City in 1994."
After a brief pause, Sovell turned sideways and placed a hand over his chest, bowing to Artoria, who had likewise returned to her Heroic Spirit attire, before introducing her to the Servants.
"This is my king, Arthur. She was summoned alongside me during the Fourth Holy Grail War in Fuyuki City, in the Saber class-
"As for why we've been able to remain manifested to this day, that's another matter. Let's put it aside for now.
"-Our current role is to act as temporary guardians for these four children, your Masters. We're responsible for leading the group and ensuring their safety during this Holy Grail War."
The youngsters all nodded in unison, corroborating Sovell's words.
"Also, our purpose in