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

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===

The white chess piece gradually merged into Asia's body.

Soon, Chiba Akira heard the system's notification sound.

[Ding!~]

[Congratulations to the host for completing the check-in task!]

[Check-in Level: Purple.]

[Check-in Type: Event Check-in.]

[Check-in Event: Capture of the Saint.]

[Congratulations to the host for receiving the reward: Balance Breaker Mode.]

[Balance Breaker Mode: As the name suggests, the Sacred Gear obtained by the host can be immediately mastered, and the Balance Breaker can be activated. Additionally, the host can help others awaken their Balance Breaker.]

...

Balance Breaker!

This term made Chiba Akira feel slightly excited.

An ordinary Sacred Gear and a Sacred Gear with an activated Balance Breaker were completely different concepts.

An intermediate-level demon using a Sacred Gear normally could only reach the level of a high-class demon at most.

When facing the ten-winged fallen angel Kokabiel, even though Issei Hyoudou used the "Transfer" ability to amplify Rias's power dozens of times, reaching the level of a top-class demon, they still couldn't defeat Kokabiel, who was at the level of a Maou.

However, the Balance Breaker was different.

The Balance Breaker could elevate the user's power by another level, allowing an intermediate-level demon to defeat a top-class demon!

Moreover, in a burst state, it was possible to elevate the power by yet another stage!

Of course, the Balance Breaker wasn't without its weaknesses.

High output, fragile body, and short duration were common issues for Sacred Gear users.

In the Balance Breaker state, the duration was even shorter.

In the later stages of the story, although many Sacred Gear users challenged the main characters, without using the Balance Breaker, their bodies were extremely fragile.

...

"Whoosh~"

White feathers scattered.

Eight white angel wings grew from Asia's back.

Seeing this, Chiba Akira nodded in satisfaction.

After absorbing the Mutation Piece, the stronger the person's luck, the greater the enhancement they would receive.

As expected of one of the main heroines of the story, Asia directly grew eight angel wings, and her strength skyrocketed from that of an ordinary human to the peak of a high-class demon.

Chiba Akira knew that this was just the beginning.

As Asia continued to train, the number of wings on her back would increase, and eventually... Asia would most likely become a twelve-winged angel!

...

Asia gently touched the wings on her back and looked at Chiba Akira with a gaze full of "devotion."

The way Asia looked at Chiba Akira wasn't with gratitude or emotion, but with—"devotion."

Soon, Chiba Akira understood the reason behind Asia's gaze.

"Chiba Akira-san, actually, yesterday, I received a revelation from God. God said that tomorrow, the Holy Son would take me as his servant."

"And then... Chiba Akira-san, you came to find me the very next day."

"Uh... so, does that mean I'm the so-called 'Holy Son'?"

Chiba Akira's mouth twitched slightly.

He was a demon.

If Asia wasn't dreaming, then the only explanation was that the God of the Bible had lost his mind.

...

"Ms. Naoto, there's someone here I need you to handle."

"Please transfer him to the Astaroth family's main house."

"Chiba Akira-sama, who do you want me to handle?"

"Dieudonné Astaroth of the Astaroth family."

"Why do we need to handle him?"

"Because he came looking for trouble, and I beat him up."

"Understood. Please wait a moment; I'll be there shortly."

...

Ten minutes later.

After dealing with Dieudonné, Chiba Akira headed to school.

At the school gate.

A long, black-haired beauty with glasses had been waiting for some time.

"Chiba Akira-sama, the president requests your presence."

Tsubaki Shinra adjusted her glasses and bowed respectfully.

Although she had always respected Chiba Akira before, the level of respect she showed now was on a completely different level.

Previously, her respect was due to Chiba Akira's status.

Now, her respect was due to Chiba Akira's strength, intelligence, and courage.

Yesterday, Sona had fainted, but Tsubaki Shinra had remained conscious.

While tending to Sona, she had witnessed the entire process of Chiba Akira extorting the Maou.

The strength to defeat Sona, the intelligence to outmaneuver her, and the boldness to plan the extortion of a Maou from the very beginning—Tsubaki Shinra genuinely believed that Chiba Akira was the most suitable partner for Sona.

...

Student Council Room.

When Sona saw Chiba Akira, her rose-colored eyes were filled with turmoil.

It seemed that the influence of the high-dimensional succubus bloodline hadn't worn off yet.

After taking several deep breaths, Sona finally managed to suppress the urge to get closer to Chiba Akira.

Once seated, tea was served.

After the formalities, Sona brought out two safes.

"Chiba Akira-kun, the first safe contains three drops of Phoenix Tears."

"The second safe contains the equivalent value in monster corpses."

"Big Sister said she doesn't want to see you, so she asked me to deliver these to you."

...

"Alright, I've received the items."

Chiba Akira checked the contents of the two safes, feeling slightly excited.

He had calculated the price beforehand.

Three drops of Phoenix Tears would be enough to solidify Agumon's foundation.

The purified data from the monster corpses would allow Agumon to evolve into "MetalGreymon"!

Once this batch was fully absorbed, Chiba Akira's Agumon would become a true Perfect-level Digimon!

When its foundation was incomplete, Agumon was already invincible among high-class demons. After solidifying its foundation, wouldn't it become even more overpowered?

...

Sona looked at Chiba Akira's handsome face, unsure of how she felt.

She didn't have any thoughts like, "My sister was scammed by this despicable man."

Instead.

Her mind was filled with strange thoughts like, "If Big Sister hadn't been able to provide these items, would I have been claimed by Chiba Akira-kun last night?"

Just kissing Chiba Akira had already made her heart race and feel so good. If she were to be filled by him...

No! No, no, no!

Sona slapped herself hard, finally snapping out of her strange state.

...

The sound of Sona slapping herself caught Chiba Akira's attention.

Hmm... was Sona acting a bit off today?

Ah... was the succubus bloodline's effect still lingering?

No wonder the high-dimensional succubus bloodline was so potent.

Thinking back to Ms. Naoto's insatiable demands last night, Chiba Akira nodded in understanding.

If even a mature woman like Ms. Naoto couldn't resist, it made sense that Sona couldn't either.

It wasn't that he disliked Sona.

If Sona were to offer herself, he would probably hesitate for a few seconds before accepting.

However, claiming Sona now was still too early.

If he were to take Sona before their engagement was officially dissolved, and it was discovered, they would be forced to marry.

The demon race took such matters very seriously.

Once a pure-blooded demon was engaged, both parties were expected to remain chaste until marriage.

If premarital relations were discovered, and it was with their fiancé, the worst outcome would be an early marriage.

However, if it was with someone else, the offending party would have to pay a terrifying compensation to the other party.

If the wronged party still wished to proceed with the marriage, they would gain the right to take an additional legal spouse.

Because the consequences were so severe, many pure-blooded demons, despite their naturally promiscuous tendencies, exercised restraint before marriage.

(PS: A patch regarding the collection of Phoenix servants. The protagonist still acts when necessary. Due to Chiba Akira's influence, Riser's servants are temporarily under the care of his younger sister, Ravel.)

...

After finishing his inspection, Chiba Akira stored the safes in his personal storage space.

"The inspection is complete. Serafall has fulfilled her part of the contract, and I will also honor the contract by destroying the one I made with you, Sona."

Hearing this, Sona's feelings were complicated.

"Destroying the contract with me..."

This was the result her sister had achieved at great cost.

So why didn't she feel happy about it?

Was it because she had fallen for Chiba Akira?

Had she fallen for this boy who was both smarter and stronger than her?

[But at least, Chiba Akira-kun only destroyed the contract that required me to offer myself. Our engagement still stands.]

[That means Chiba Akira-kun and I are still engaged.]

Thinking this, Sona felt somewhat reassured.

However, Chiba Akira's next words instantly made her heart sink.

"Sona, I think it's better if we dissolve our engagement."

"Huh?"

Sona was stunned.

...

Note: So far this story is published up to chapter 42 on my patreon go take a look and remember if you reach 30 stones of power I will publish the next chapter.