With the book secured, Lynn stayed to ask about the Underworld—
especially the Old Demon King Faction's movements.
He felt no loyalty to the ruined Valifor clan, nor any wish to avenge them,
but the name still attracted trouble—
engagements with the Xidi, reprisals from the Old Demon King Faction.
He had to plan ahead: recruit servants, grow stronger, and keep watch so he wouldn't be wiped out like his so-called family.
All because his power was still lacking.
Recruitment had to speed up—
at least until he reached Demon-King level.
"After the Valifor extermination the Underworld cracked down; they've stayed hidden," Rias reported.
She glanced at Utaha scribbling furiously.
That book didn't feel like a Sacred Gear—just her ability.
Still, Rias reminded them, "You can take the book home; it's hardly classified."
Lynn sipped Akeno's black tea. "We'd still have to copy it anyway."
After only minutes of transcribing, he already sensed new tricks for handling mana.
He noticed his Secretary Demon differed from Utaha's: she could only use recorded arts through her Demon Book,
while he seemed able to cast them directly—
as if the Secretary form were his default.
Evidently when a servant's power transferred to him, it came with perks.
Too absorbed to notice Utaha's glare.
Easy for him to say—
two thousand pages! Utaha's eyes dimmed at the prospect.
Why did it have to be Secretary Demon!
Such heavy resentment… Rias eyed her worriedly.
Would she be okay?
Lynn noticed Utaha's sullen face and asked, "Miss Rias, is there a spell for automatic writing in there?"
Utaha's head snapped up, eyes pleading.
"There is," Rias said. "Around page one-thirty."
Flap—
pages flew.
Lynn sipped his tea, basking in his own kindness.
He hated seeing his servant suffer.
"Found it!" Utaha exclaimed.
Rias smiled. "It's a simple spell. If you learn it now I can give pointers."
Utaha returned the smile. "Thanks, but no need."
She dipped her pen and resumed writing.
Rias blinked, puzzled, and glanced at Lynn.
Hadn't they asked about the spell to avoid copying?
Why keep writing?
She understood moments later.
"Done!" Utaha set down her pen, stretched, and channeled mana in anticipation.
Buzz—
The Demon Book blazed with light.
The page for "automatic writing" rose in a small white array.
A white-quill pen materialized.
Success!
Utaha cheered inwardly—
real magic!
A trifling spell, yet it thrilled her.
"This is…" Rias's eyes sharpened.
It was indeed the auto-writing spell.
Had she learned it mid-copy?
Or was the secret simply… copying?
And that strange book…
Many thoughts flickered through Rias as she praised,
"I didn't expect Kasumigaoka Utaha to master the 'Automatic Writing' magic so quickly. Mr. Lynn's subordinate is truly extraordinary."
Then, Rias changed the subject and said, "I remember Mr. Lynn's residence is quite a distance from Komao Town, isn't it?"
"There's a teleportation magic on page 777 of that Demon Book. Why don't you learn it now and set a marker here? It'll be convenient for future travel."
Kasumigaoka Utaha's performance piqued Rias's interest.
She wanted to see if it was Kasumigaoka Utaha's strong learning ability or some special power.
Although the Magic Cube Teleportation on page 777 was a common skill in the Underworld, its difficulty was absolutely no less than some secret techniques of noble Demon families.
Even she had spent a long time diligently studying it.
She didn't believe Kasumigaoka Utaha could master this ability in such a short time.
Lynn saw through her intentions at a glance, but he didn't stop her; instead, he encouraged, "Shiwa."
Although they had only been together for a little over a day, Kasumigaoka Utaha understood Lynn's meaning.
She turned the black Demon Book to page 777.
'Magic Cube Teleportation'.
The white feather pen wrote without any pause on the Demon Book.
Rias didn't have to wait too long.
The moment the white feather pen stopped, Kasumigaoka Utaha, with Lynn's permission, directly released her magic power.
Buzz—
A purple magic circle, dozens of times larger than before, rose above the Demon Book!
The dense runes within it made one's eyes dizzy.
At least Kasumigaoka Utaha didn't understand what those runes represented.
But it didn't matter; she didn't need to understand!
This was a Secretary Demon!
Rias stared at the Magic Cube Teleportation's magic circle, lost in thought.
Her eyes were filled with disbelief.
She... really learned it?
In such a short time??
Even Himejima Akeno and Tōjō Koneko's gazes were drawn over.
As Rias's subordinates, they also mastered 'Magic Cube Teleportation', so they were even clearer about the difficulty of this magic.
A subordinate who seemed to have only just reincarnated from an ordinary human into a Demon, who had just come into contact with the supernatural world, mastered a very difficult magic in an extremely short time.
If it were just through learning, it could be described as having heaven-defying comprehension.
But it was clear that Kasumigaoka Utaha didn't 'learn' it.
Rias's gaze fell on the Demon Book, and the corners of her mouth unconsciously curled up, "What an interesting ability."
"Copying, or rather, inscribing, recording?"
"As long as the knowledge is recorded in that Demon Book, one can master it."
Lynn clapped his hands and said, "As expected of the young lady of the Gremory family, you quickly figured out Shiyu Beast's ability."
"Allow me to formally introduce her, Secretary Demon, Kasumigaoka Utaha."
"Secretary Demon..." Rias murmured, then said, "A very fitting title."
Rias took a deep breath, then probed, "I wonder if Mr. Lynn would be willing to disclose the limits of this ability."
Record everything, control everything.
If it truly reached that level, Rias would not hesitate to mark it as a God-Slaying Tool.
Lynn rested his chin on his hands, a slight curve on his lips, "Limits, huh? I'm not entirely sure either. Why don't you, Miss Rias, personally investigate?"
How could a common magic application technique satisfy him?
It's time to unleash some skills, young lady of Gremory.