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"Hmm?"

Index suddenly fell to the ground.

Controlled by "Automatic Recording," she raised her head and looked toward the sky.

"You finally noticed?" Mikoto said.

"What... huh?!" Touma raised his head as well.

But he froze too.

Because the sky was neither covered in dark clouds nor clear and bright.

There was a sphere in the sky. Its diameter was not particularly large, less than thirty kilometers. Something was still jetting from both sides of it, like pulses.

"Rumble—rumble—rumble—"

The pulses came at a steady rhythm. In addition, there were thunderstorms caused by the strange sphere continuing to twist and grind against the surrounding space.

Only then did Touma notice that the clasp on Mikoto's collar had already been undone.

"That is... hey, isn't that... a neutron star?"

Was the Earth going to be destroyed?

Touma's mind went blank.

I came to ask you for help, not to have you destroy the world!

"Not quite. I can't pull it over here. But what you're seeing is indeed RXJ1856.5-3754."

"Huh?"

"The neutron star closest to Earth," Mikoto said. "First, I adjusted the formula and created an imitation Dirac String. Then I used the Dirac String to tear open a wormhole, allowing the Supersymmetric Particle Flow to form a stable passage... after that, I could pull a portion of its radiation over here. So, Touma, what you're seeing isn't the neutron star itself, just the light emitted by it. Otherwise, Earth would have been torn apart long ago."

"What exactly are you trying to do?" Touma asked.

"Simulate... the movements of a Star Body?"

Another neutron star appeared in the sky. Then, the two neutron stars began to "merge."

``` [Damn, that neutron star actually exists]

[What the hell is a Dirac String?]

[I only know about the Dirac Sea]

[You might