"Hmm?"
Hearing the voice, Rozen was startled at first, then turned his head toward the source.
And when he saw who it was, Rozen was genuinely surprised.
"Good, you didn't go far."
From the direction of the control room, a black shadow flew over.
Yes—flew over.
Because the figure was none other than an owl, wings beating as it came his way.
Who else could it be but Olga Marie?
"You're looking for me?"
Watching Olga Marie flying toward him, Rozen couldn't hide his surprise.
"What? Is it strange for me to look for you?"
Olga Marie frowned slightly as she asked.
"Isn't it strange?"
Rozen countered instead, making Olga Marie unable to answer.
Thinking about it carefully, it truly was strange.
"For the great Director herself to call me aside alone—of course it makes me feel it's strange."
Rozen shrugged as he spoke the truth.
Everyone in Chaldea knew Rozen and Olga Marie never got along—both of them knew it perfectly well too.
So even if things weren't as tense as before, they still didn't mesh.
Until now, they had never held a private, one-on-one conversation like this. Aside from some interactions back in Fuyuki's Singularity, they had always spoken only in official contexts and capacities.
For Olga Marie to personally chase him down like this—it would be stranger if Rozen didn't feel suspicious.
But—
"At this point, there are some matters I must discuss with you."
Olga Marie lifted her gaze toward him.
At once, a sense of gravity and heaviness filled the air.
Rozen raised an eyebrow but said nothing.
Seeing that, Olga Marie hesitated for a moment, then gathered her courage and went straight to the point.
"I want to talk to you about Romani Archaman."
At that, Rozen's eyes flashed sharply.
"My brother?" Rozen fixed his gaze on Olga Marie. After staring for a while, he replied, "What could big bro possibly have going on?"
At least, that's what Rozen said out loud.
But—
"Don't tell me you're unaware." Olga Marie spoke bluntly. "That brother of yours is hiding a secret."
The moment he heard that, Rozen fell silent.
Of course he knew Roman had secrets.
There had always been hints.
For example, Roman knew about Rozen's Miracle.
He also knew certain secrets about Rozen himself.
And his behavior up until now had never quite matched that of an ordinary medical officer.
On the surface—and even internally—Roman looked unreliable, neither gifted with outstanding talent nor remarkable achievements, at best just a somewhat capable doctor. Yet there were always inexplicable signs surrounding him.
Olga Marie explained further.
"Ever since the Fifth Singularity, I've been secretly investigating him. I wanted to check his information records in Chaldea or his personnel file. But I found absolutely nothing."
Her gaze locked firmly on Rozen.
"I'm not exaggerating—there really was nothing. No detailed records of his background before joining Chaldea. And all the records after his arrival are under the highest level of restriction. The parts that are visible are likely forged. His true information is locked under access privileges even I cannot breach."
That was a terrifying fact.
Because in Chaldea, the one with the highest authority was, without question, the Director—Olga Marie.
And yet, if even the Director herself couldn't access those files, what did that mean?
"It means there was someone with higher authority than me who deliberately hid your brother's information."
Her tone grew heavier.
"There may be no such person in Chaldea now, but in the past, it's another story."
After all, Olga Marie was not Chaldea's first Director.
The first was her father—the one who built Chaldea as a safeguard for humanity, created the summoning system known as Fate, conducted forbidden experiments such as the Demi-Servant project, and established countless other clandestine mechanisms—Marisbury Animusphere, the previous head of the Animusphere family.
Three years before the Human Order Incineration incident, Marisbury had been found mysteriously dead in the Director's office. He alone had truly wielded supreme authority in Chaldea.
After his death, Olga Marie, still just a student at the Clock Tower at the time, had been forced to inherit his duties—both in the Tower and in Chaldea—becoming the Director of this organization meant to safeguard humanity's survival.
And back then, Roman was already employed in Chaldea.
"According to the records, it was my father, the previous Director of Chaldea—Marisbury Animusphere—who decided to hire your brother."
Olga Marie pressed her lips together as she spoke.
"After that, all the data concerning Romani Archaman appeared utterly ordinary, almost deliberately unremarkable. But when I investigated deeper, I discovered he had been involved in nearly every secret matter in Chaldea—Mash, and you, for example."
Her words made Rozen unconsciously clench his fists.
It was the truth.
For someone supposedly just a simple doctor, Roman somehow knew about the Demi-Servant experiment, knew of Mash's existence, even personally oversaw bringing her into Chaldea's operational layer to interact with outsiders, turning her into a Master candidate—and, of course, had a deeply interwoven relationship with Rozen.
How could that not be unusual?
Rozen knew his own origins well—why he was born, why he was in Chaldea—but he had no idea why Roman had become his brother.
And yet, Roman was truly his blood brother, something that could be confirmed by both DNA and blood tests.
For that, Rozen had once been puzzled, until eventually he let it go.
But a man so entangled in his life could never be just a normal doctor.
Olga Marie confirmed this as well.
"In Chaldea's database, his true information is locked by privileges beyond even mine. And outside of Chaldea—in other words, before Romani Archaman ever arrived here—there is absolutely no record of him at all."
Olga Marie's breathing grew heavy.
"Before he joined Chaldea, there's nothing about his origins, nothing about his past, nothing about his experiences. It's as if he simply appeared out of thin air. And yet, he was accepted into Chaldea as its chief medical officer in his twenties. That kind of personnel decision is impossible to justify as normal."
That was who Roman was—surrounded by mysteries, wherever one looked.