In DxD Starting with Sign-Ing in as the Red Dragon

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On the other side.

The next evening, after finishing a date with Amano Yuma, Chiba Akira returned to his

study.

In just two days, Chiba Akira had fully purified the data needed for Agumon.

...

"Soon, I will have a Tyrannomon with the power of a high-ranking demon!"

Chiba Akira was very excited.

Agumon is powerful. Previously, Agumon was at the peak of a mid-level demon but

had an ominous strength that could compete with high-ranking demons.

Once evolved, wouldn't Tyrannomon be invincible among high-ranking demons?

While Chiba Akira was excited, he suddenly heard the system's notification sound.

[Ding!~]

[Congratulations, host, you have triggered the villain sign-in!]

[Sign-in Level: Silver.]

[Sign-in Type: Location Sign-in.]

[Sign-in Location: A set of demon chess pieces from a high-ranking demon.]

"......"

"Hmm....."

Chiba Akira pondered for a few seconds, unsure of what expression to make.

"Does this system only give out such low-difficulty sign-ins?"

While complaining, Chiba Akira took out his set of demon chess pieces.

[Ding!~]

[Congratulations, host, you have completed the villain sign-in!]

[Sign-in Level: Silver.]

[Sign-in Location: Demon Chess Pieces.]

[Congratulations, host, you have received a reward: Exceptional Chess Piece.]

Exceptional Chess Piece: A higher-grade chess piece modified from the original

demon chess piece, possessing the power to break through racial limits and

continuously strengthen itself, greatly enhancing the talent of its owner.

The stronger the user's luck and the more frequently they appear in the plot, the

greater their enhanced talent.

Note: As a king, the host can use their subordinates' abilities and has complete

control over them. As long as the user is in an unresisting state, they can forcibly

implant the chess piece.

There are two sets of exceptional chess pieces, one black and one white, with

different enhancement directions of light and darkness.

In addition to their powerful effects, they are also highly concealed.

As a king, the host can adjust their chess pieces' appearance and data to make them

indistinguishable from demon chess pieces; as long as they do not summon too many

pieces at once, they will not be exposed.

The brilliance faded away.

A chessboard appeared in front of Chiba Akira.

The blood-red demon chess pieces vanished.

In their place were two neatly arranged sets of black and white chess pieces.

....

"Agumon!"

Without any hesitation, Chiba Akira summoned Agumon, who had grown up alongside

him since childhood.

"This is for you."

One black and one white, two exquisite queen chess pieces were taken from the

board by Chiba Akira.

He didn't know which piece Agumon would adapt to better, so he decided to let her try

both.

Because one thing was certain:

Agumon would definitely become his "queen."

....

[Agumon: What is this?]

Agumon held the two chess pieces curiously while looking at Chiba Akira.

"This is an enhanced demon chess piece that can improve your talent and limits. You

can choose one that your body desires to absorb."

[I see now; I understand.]

Realizing that this could make her stronger and allow her to evolve, Agumon began to

sense carefully.

[I think this piece is more suitable for me.]

In the end, Agumon chose the white queen chess piece.

Chiba Akira was somewhat surprised by Agumon's choice.

For a monster like Agumon that evolves by absorbing life data, it seemed she should

absorb the black queen piece instead.

However, since Agumon said she felt that the white queen piece suited her better, he

supported her choice.

....

Returning the black piece to Chiba Akira,

Agumon held the purified monster data in one hand and the white queen piece in the

other as she slowly closed her eyes.

A white light illuminated the entire room.

The queen piece gradually merged into Agumon's body.

Soon, Agumon's entire body turned white.

In that white glow, Agumon's form began to change rapidly from her original height.

[Agumon Evolution!——]

[Tyrannomon!——]

[Ding!~]

[The host's contracted beast has successfully evolved.]

[Congratulations on obtaining your contracted beast——Tyrannomon!]

A gigantic dinosaur-type monster rose from the ground! It instantly filled Chiba Akira's

study!

"Boom!~"

Due to Tyrannomon's immense size, both the second and third floors' ceilings were

shattered!

What appeared before Chiba Akira was a gigantic Tyrannomon standing about fifteen

meters tall!

"Awesome!"

"It wasn't for nothing that I fed you so much!" Chiba Akira couldn't help but exclaim

in admiration.

His Agumon had developed exceptionally well—far stronger than an ordinary Agumon.

Otherwise, he wouldn't have invested so many resources without hesitation.

In the first season of Digimon Adventure, Taichi Yagami's Agumon was less than one

meter tall.

And Chiba Akira's Agumon was already taller than him even before evolving!

Taichi's Tyrannomon from that season was only about five or six meters tall.

But Chiba Akira's Tyrannomon was a full fifteen or sixteen meters!

"If it keeps evolving like this, it might even evolve into the legendary 'War God

Tyrannomon'!"

War God Tyrannomon is Taichi's battle Tyrannomon's nickname in the new Digimon

series.

It's called War God because it possesses god-like combat power!

Not to mention standing fifty or sixty meters tall; it could directly star in a kaiju movie!

....

"Sorry, Chiba Akira; I broke your house." Tyrannomon lowered her head and

apologized in a deep voice.

She didn't realize she would be so large after evolving and ended up breaking Chiba

Akira's study.

"It's just a house."

Chiba Akira certainly wouldn't blame Agumon for this.

"It's fine~ We can just switch to another villa."

"Your becoming stronger is far more important than any villa."

[Mm, I understand now; I will train hard.]

Tyrannomon nodded and once again radiated white light from her body.

A few seconds later,

Tyrannomon's form gradually shrank back to Agumon's original appearance.

[Chiba Akira, I think this body is better.]

[I'm familiar with this body; plus with this body I can always stay by your side.]

"Yeah, that's true; being smaller would indeed be much more convenient."

Chiba Akira nodded in agreement with Agumon's statement.

His Agumon wasn't underdeveloped; she simply chose to revert back since she could

control her evolution and devolution!

...

There was quite a commotion in the study room.

Noticing something happening in the villa,

A blonde-haired blue-eyed woman hurriedly rushed into the study.

"Chiba Akira-sama, what happened?"

The blonde woman entered through the door and surveyed the chaotic surroundings.

Was it... attacked by monsters? Or was Chiba Akira conducting another experiment?

.....

The blonde woman is Chiba Akira's housekeeper and maid named "Hayasaka Nao."

Indeed,

She is Hayasaka Nao from "Kaguya-sama: Love Is War," who is Ai Hayasaka's mother.

Initially unsure about her identity until he learned about her late husband and

daughter named Ai Hayasaka—Chiba Akira finally confirmed that this blonde woman

was indeed Hayasaka Nao he knew.

Hayasaka Nao knows about Chiba Akira's noble demon identity and has always

served him as his housekeeper.

Although she isn't very powerful—merely a low-level reincarnated demon—she is

quite capable and proficient in various household duties like cooking and etiquette;

she even excels at negotiation and business dealings!

Chiba Akira wanted to experiment with Amano Yuma because of her skills.

She... is indeed his eccentric blonde maid!

....

Of course, Hayasaka Nao wasn't always eccentric.

Usually reliable and composed,

In front of the mess in his study room now made Hayasaka Nao helplessly rub her

forehead.

Well,

This isn't Chiba Akira's first time blowing up a room; she had grown accustomed to it

by now.

"Chiba Akira-sama, please temporarily move to the reception room; leave this mess

to me; I will restore it as soon as possible."

"The reception room?"

Chiba Akira raised an eyebrow; usually he was told to return to his own room or go to

the hall; why did it change to reception room today?

"Yes indeed—the next head of House Sitri will visit shortly."

"Miss Sona Sitri seems to have something important to discuss with you; she said

you must spare some time."

.....

"Sona finally came looking for me?"

Chiba Akira chuckled lightly as he walked toward the reception room.

Alright then,

He would see how his fiancée planned on breaking off their engagement!

....

At the door of his study room, Hayasaka Nao looked worriedly at Chiba Akira's figure

leaving.

[I hope Chiba Akira-sama doesn't do anything drastic.]

[Right now his identity holds no value anymore; breaking off engagement with Miss

Sitri and gradually retreating would be the safest course of action.]

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