In DxD with Sign-In System!

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Since the Three Factions had signed the peace treaty, my life returned to normal—teasing innocent girls every day.

I was currently planning my next move, now that the system had a new feature: World Travel.

This meant I could now go to Other worlds.

Looking at the list of available worlds, I couldn't help but consider my options.

[Ding! The host can currently choose from the following options:

[Akame ga Kill!] World

[Date A Live] World

[Trinity Seven] World

[Strike the Blood] World

"Hmm, only four choices?"

Looking at the four options, I was a little conflicted.

The Strongest Being in the Akame ga Kill! world was Esdeath, who was at most Maou-class. The world level was low, and there wasn't much to gain there.

Date A Live—as a Combat-harem anime, had plenty of cute Spirits that I couldn't miss. But I decided to look at the other two worlds first.

Trinity Seven and Strike the Blood? Strictly speaking, the combat and power levels of the latter were much higher than the former two.

But in terms of danger, the Trinity Seven world was arguably more absurd and bizarre. with "Breakdown Phenomena" events that destroyed worlds and created new ones were commonplace.

After careful consideration, I finally chose the world of Strike the Blood. Although the girls there were a bit possessive, they wouldn't be like Rias and Akeno and the others.

Besides, there was the incredibly considerate and understanding silver-haired Beauty, La Folia Rihavein. She could even help me maintain harmony among my harem members.

She was practically a Godsend for any man!

I had also considered the world of Date A Live. After all, who wouldn't like cute Spirits throwing themselves at you?

But they were also a bit too prone to jealousy. If I wasn't careful, a food-loving Tohka might just go into Spirit Inversion, and I'd be in for a world of hurt.

So, my dear Spirits, please forgive me. I'll visit you next time!

Since time in the DxD world passed incredibly slowly when I traveled to other worlds, and I could return at any time, I had nothing to worry about.

But just in case, I cast a protection and warning spell on Rias and the others. If they were ever in danger, I would sense it immediately.

Without further ado, I made my selection and began my journey.

In the next instant, I vanished in a flash of light.

——

On top of a tall building, a white light flashed, and then my figure appeared.

"So, this is Itogami Island, the main setting of Strike the Blood."

From the top of the skyscraper, I looked at a completely artificial city floating on the sea, built from carbon fiber, resin, metal, and magic. I sighed softly.

"But this weather is really hot! I knew Itogami Island's temperature was always above 20 degrees Celsius, but the sun is scorching."

Then, I used magic to create a protective barrier around myself, instantly cooling down!

"System, open the map and show me the sign-in characters. I don't even know where the plot is at in this world."

I recalled the plot of Strike the Blood as I checked the markers on the system map.

"Hmm... There are indeed a few task markers on Itogami Island. But why are there so few sign-in characters? This is strange..."

Looking at the few dots on the map, I asked the system, puzzled.

[Ding! The host's current strength no longer requires low-level sign-ins. Unless they are major characters, sign-in tasks will no longer be generated!]

Hearing the system's explanation, I nodded thoughtfully, then looked at the most obvious sign-in characters in this world.

[The First Primogenitor, known as the "Lost Warlord," Ki Juranbarada: Black Grade sign-in.]

[The Second Primogenitor, known as the "Fall Gazer," Aswad-Guul Aziz: Black Grade sign-in.]

[The Third Primogenitor, known as the "Chaos Bride," Giada Kukulcan: Black Grade sign-in.]

[And the Fourth Primogenitor: Nagisa Akatsuki, Black Grade sign-in.]

"Huh? So, it's Kojou Akatsuki's younger sister, Nagisa, who became the Fourth Progenitor! This must be another change due to my arrival!"

Saying this, I smiled. I had a good impression of Kojou Akatsuki, the original protagonist. This saved me the trouble of dealing with him.

"The strongest is only at the Black Grade? That's a bit low. But I guess it's acceptable."

I shrugged, a little disappointed.

The Power levels in Strike the Blood were generally low, completely incomparable to the world of DxD.

The strongest beings in this world were the Primogenitors.

Each one is equivalent to an entire army. They controlled powerful familiars and commanded legions of darkness, established their own empires on three different continents.

They were lonely Immortals.

As vampires lived longer, they would accumulate greater power, their feelings and desires intensifying over time. The Primogenitors—as the oldest vampires, had accumulated incredible power, unmatched by Humans or Demons.

Although the Progenitors possessed immense power, they didn't easily start wars. After long periods of conflict, the demons and humans, thanks to the efforts of the First Primogenitor, reached a peace agreement with humanity—the [Holy Ground Treaty Organization].

The three Progenitors and the [Holy Ground Treaty Organization] mutually monitored the implementation of the Peace Treaty.

——

——

I learned that Nagisa had just become the Fourth Primogenitor—but due to the Primogenitor's soul, she had lost her memories.

Then, I discovered that the system had also thoughtfully prepared a student identity for me, and I was even in the same class as Kojou.

"It seems I can't escape the fate of going to school." I stood on the high-rise building, a wry smile on my face.

"Now then, I should go find some fun!"

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