One-way traffic

Hatsune Miku beside him had her hands behind her back, and her scrutinizing gaze subtly made Accelerator feel a little uneasy.

Even the first person couldn't help but change the subject at this moment.

"That brat probably doesn't know anything about all this, right?"

"Yes, Last Order and the side story individuals are still asleep. From now on, we should try our best to prevent the impact of the battle from affecting them."

The battle...has it spread to other areas?

Having considered this, Accelerator looked up at the distant sky.

"The places we're going to next, even if they wanted to affect this area, probably wouldn't be able to."

The deepest part of a black hole.

Although it's completely unclear what the thing in that black hole is, anyone should be able to feel a sense of déjà vu, like the final boss is right in front of them.

The same feeling applies to Accelerator.

Because it has always been the strongest person like him who brings fear to others, he can understand what it feels like to be in the position of the final boss and wait for the enemy to attack him.

This battle will not be as simple as those we have experienced in the past.

Even without saying it or seeing it, one can deeply feel this.

"One side."

The girl asked him again.

This time, it wasn't just a teasing tone.

"Everything we've experienced so far, everything, is real, isn't it...?"

However, the questions she asked seemed unusually naive to Accelerator.

"...What are you talking about now? Why are you starting to doubt reality again—"

"listen to me."

The girl interrupted the other person's statement seriously.

"...Takibayashi has already told me the reason why these worlds are now intertwined."

He recalled what Takibayashi had said to him when no one was around.

Hatsune Miku clenched her hands tightly and covered her chest.

"Because of the soul system, worlds that should have never intersected became connected, and it is because of these connections that this phenomenon of excessive interference and fusion between worlds has occurred."

"That's why everyone came into this world...that's right."

"That's why we met..."

Accelerator remained silent.

What she said was absolutely right.

"If it weren't for the soul system, we... would never have the relationship we have now."

Hatsune Miku should be living in a peaceful world, a world without any superpowers, a world where she should be active as a popular idol singer.

She should have existed simply as a teenage idol; that's what she should have been, that's all.

But the discordant parts shattered everything that originally belonged to her life.

It was because the Soul System chose her, it was because of the existence of the Soul System... that she ended up in that post-apocalyptic world where zombies existed.

That's what led to her meeting Accelerator.

It is precisely because the soul system can interfere with all kinds of worlds and allow people who should not be gathered together to come and go, that the various stories left by the two of them in one world after another are created.

The girl's original life was completely destroyed because of her complicated relationship with the soul system and Accelerator.

But she... didn't care.

Because her original life was disrupted by encountering a soul system, and she was forced to travel to other worlds with Accelerator... she didn't think that was a bad thing.

This is definitely not a curse that binds to the soul.

For Hatsune Miku, all her experiences and memories to date are her most precious treasures.

She was very happy.

I am overjoyed to have been chosen by the soul system, and delighted to be able to create intertwined memories with the people before me across countless worlds…

Therefore.

Only a young girl could evoke such an emotion.

"I...I'm scared."

She could no longer control her emotions.

Perhaps it was because of the shock of seeing Alice yesterday that Hatsune Miku's emotions, which overflowed like a flowing stream, became completely uncontrollable.

"This whole thing... is it related to that system, right? According to Takibayashi, if we deal with what's inside the black hole, we can restore everything in this world to its original state. But what if the connections between the different worlds are also severed? What if we can't travel to other worlds together anymore... or even if two worlds that were already merged have to separate?!"

But these are not the point.

There is only one thing that Hatsune Miku fears most.

correct.

If all of this is related to the soul system, then in the end, it might even be necessary to erase this system altogether—

So, all of this—the relationship she has built with Accelerator up to this point.

All of them will cease to exist.

The reason why people from different worlds can meet each other, get to know each other, and come into each other's worlds is because of the power from the system.

If the system disappears.

Everything that shouldn't have happened will return to normal.

…Hatsune Miku will return to her original world, forever living as a world-class diva in that normal world, spending her unchanging life with her friends and family, and then encountering all sorts of new bonds.

And Accelerator will return to a time when it never experienced any of this in the first place.

No system was encountered.

I have never even met Hatsune Miku.

The thought of this, the thought that I might never be able to travel to other worlds with him again, or even... that we might be separated because of it, or even that we might not be able to remember each other's memories.

She could no longer control herself.

If, if letting all of this continue would allow their situation to continue—

"Hatsune."

The sound interrupted my thoughts.

The person in front of me, the one with white hair and red eyes.

He made a very gentle gesture.

Gently place your hands on your forehead and in front of your ears.

That moment.

For Hatsune Miku, it was as if everything in the world had come to a standstill.

"Believe me."

Nothing special was said.

It was neither like usual, where he declared his overwhelming victory in a domineering and rude tone, nor like a rational analysis of the situation, where he rattled off a variety of analytical ideas about the current state of affairs.

This time, Accelerator simply told himself in very gentle and innocent words.

believe him.

I believe that the person standing in front of me can absolutely stop all of this and absolutely protect all of this.

That's all that's needed.

"…Um."

Hatsune Miku nodded unconsciously.

What kind of expression do I have right now?

I couldn't see it, nor could I feel it; I just felt that there were tears welling up in my eyes, tears that had been accumulating for a long, long time, slowly swirling around.

The feelings that have been suppressed for so long.

"One side..."

She couldn't take it anymore.

He pressed his body tightly against the direction of the passage.

"I... will always consider you the most important person in my life..."

Even their cheeks were facing each other.

The girl approached gently.

The fresh breath was so clean that even Accelerator could sense it directly.

"I...have always been...towards you..."

She slowly moved closer to him.

boom--! ! !

In that moment.

Accelerator took the opportunity to hug Hatsune Miku and pull her towards him.

Boom——! !

He immediately manipulated the vector, creating a gust of wind that directly blocked the countless rays of light falling from the sky.

"It's a good thing you noticed that, otherwise it would have been troublesome."

"Huh? No, I... I just..."

"...Didn't you plan to approach me so I could pull you over because you sensed an attack from the sky?"

This is a one-sided idea.

Then, after learning that her actions had been misunderstood as such, she realized...

"…Fool."

Hatsune Miku puffed out her cheeks and said, blushing, as if cursing.

"You blockhead...can't you...can't you even be a little bit perceptive of other people's feelings?!"

No matter what.

From this perspective, those black holes in the sky... have indeed begun to take action.

"So, this should be the main course, right?"

The first person immediately touched the necklace around their neck.

Manipulating the vector of his mind, he directly transmitted the corresponding information to the other people in the city.

They were told that the operation would begin immediately.

"From now on, let's prepare to officially launch an attack on that bastard in the black hole—isn't it about time for that crucial moment?!"

The number one in Academy City, with a ferocious and battle-ready expression.

They looked up at the supreme being above their heads.

Chapter 691 The Final Battle Erupts in the World of Magic and Science

Next.

What was released from those black holes scattered all over the world was no longer just a simple horde of monsters.

It was as if the light of the whole world was about to be burned.

Does that mean hope or despair?