Mash-up Anime World: Creating the SCP Foundation to Contain Anomalies

"Well, it's finally done."

A young man named Takamine Haruto let out a long sigh as he looked at the admission letter in his hand.

On the letter, the following words could be seen:

National Joint Entrance Exam Top 1 (Ranked First)

Perfect Scores in Mathematics and Science

Accepted into Chiba Municipal Sōbu High School

The name Sōbu High School might sound familiar to some.

That's right—it's the main setting of "My Teen Romantic Comedy SNAFU" (Oregairu).

Yes, it's a very cliché setup. Takamine Haruto is a transmigrator, and this world is a daily life crossover anime world.

At least, up until today, that was what Takamine Haruto had believed.

In this Japan-like parallel world, three prestigious high schools stood out.

These "Big Three" were considered a guaranteed path to a bright future,

Sōbu High School 

Shuchi'in Academy

Hyakkaou Private Academy

As a transmigrator, Takamine Haruto relied on the knowledge of two lifetimes and his somewhat genius-level intellect to secure the top spot in the entrance exams.

Naturally, all three prestigious schools extended invitations to him.

But after having some knowledge of all three settings, Haruto decisively chose Sōbu High School.

Though Sōbu was the weakest among the three, it was still far better than Shuchi'in, a so-called noble academy that even divided students into Purebloods (Pure Institute) and Mixed-bloods (Mixed Institute).

(T/N: Ma man missed the chance to woo Kaguya, hopefully he does in the future.)

Hyakkaou Academy, which revolved around gambling and even had a pet system that ranked students based on wealth and power.

Compared to those options, Sōbu felt so much safer and more peaceful.

Putting away his admission letter, Takamine Haruto jumped off the swing and started walking back to his apartment.

This small park near his apartment was peaceful in the evening glow.

The autumn breeze swept across the grass, creating rippling waves of green.

"Ah… my future is looking bright."

But just as he was enjoying the scenery—

A golden bolt of lightning streaked across the sky.

A deafening boom shattered the park's tranquility.

Takamine Haruto's steps froze mid-motion.

The golden lightning struck the ground directly in front of him.

Had he taken just one or two steps forward, it would have hit his head directly, sending him off on another round of transmigration.

Taking a deep breath, Takamine Haruto tried to calm his racing heart.

But before he could relax—

A loud rushing sound filled the air.

Looking up, he saw a human figure rapidly plummeting from the sky.

His body reacted before his mind could catch up. Haruto stepped forward and extended his arms, catching the falling figure. To his surprise, the expected heavy impact never came.

He had prepared himself for a broken arm, but after adjusting his stance, he was able to catch the figure without much difficulty.

Letting out a sigh of relief, he finally looked down at the person in his arms.

It was a young girl.

She had golden-blonde hair and delicate facial features, especially a high nose bridge, giving her the appearance of a classic Western beauty.

She wore a white hoodie over a jacket.

For some reason, the jacket looked very familiar to Haruto.

But more importantly—

She had a strange device attached to her waist.

A small black box hung from both sides of her belt.

After examining it for a moment, Haruto came to a shocking realization.

"Isn't this… the Omni-Directional Mobility Gear?"

It didn't look like cosplay at all.

Still holding the girl, Haruto reached out with his free hand, intending to inspect the device more closely.

But just as his fingers touched the strap—

The girl's eyes snapped open.

Their gazes met.

Her eyes were a deep shade of blue.

They were beautiful.

But… this wasn't the time to be admiring her beauty! Because from an outsider's perspective, the scene looked extremely suspicious.

At this moment, Haruto was holding a girl in his arms—while his other hand was reaching toward her chest. To be fair, he was actually trying to touch the strap of the ODM gear, which was located above her stomach.

But to an observer, it looked exactly like he was groping her. Haruto's lips twitched as he awkwardly explained, "Uh… I can explain."

Before he could say anything else—

The girl kicked him in the chest with incredible speed.

Haruto barely managed to raise his arm and block the kick. They separated instantly. The girl quickly rolled to the ground, her eyes full of wariness, as she lifted her left hand toward her mouth—

She opened her mouth and prepared to bite down on her hand. Seeing this, Haruto immediately understood. This girl was either a hardcore chuunibyou who believed she could transform into a giant, or the real Annie Leonhart who possessed the Female Titan's power.

Because according to Attack on Titan's lore, Titan Shifters must injure themselves and have a strong will to transform.

And biting one's hand was the signature method.

"Annie Leonhart?" Haruto called out hesitantly.

Annie's eyes narrowed slightly, but she still kept her guard up and asked,

"Who are you? Why did you capture me?"

Haruto sighed. 'Looks like she really is the real Annie.'

Feeling slightly overwhelmed, he quickly explained:

"Annie, take a look around you. This isn't the world you know. As for why you're here—I have no idea. You'll have to figure that out yourself.

"I don't mean you any harm. I just want you to calm down and talk things through."

Haruto didn't want to become "The Talk no Jutsu Titan", but he had no choice. If Annie lost control and transformed into a 15-meter Female Titan…

He would die instantly.

After a long silence, Annie finally lowered her hand.

But instead of relaxing, she reached into her pocket and put on a strange ring.

Haruto recognized it immediately.

It was a special ring with hidden blades—one that Annie could use to instantly trigger her transformation.

Clearly, a few words wouldn't fully convince her.

But at least things were moving in a better direction.

Just then—

A blue system panel suddenly appeared in front of Haruto. A mechanical voice echoed in his mind:

[Multiverse Containment System has been bound.]

[Humanity's last hope—the Multiverse Containment System greets you with its sincerest regards.]