In this crossover anime, Yoshikage Kira longs for a peaceful life.

Deus's tone gradually turned cold:

"So that's how it is, Observer, it was all your conspiracy."

His right eye had completely shattered, and beneath the broken shell was an eyeball that looked like a mechanical prosthetic eye, radiating a scarlet light.

"You still don't understand."

Kasugano Tsubaki's eyes held a hint of pity, pity for Deus, pity for this god.

From beginning to end, only Yuno Gasai truly knew the whole plan, but that doesn't mean she couldn't deduce the whole story.

Everyone present, except for Kira-kun and Nakano Miku who was accidentally caught up in the situation, did not come from reality, but from a world called "Future Diary" in countless dimensions.

In that world, a god named Deus is about to die.

Although he is a god, Deus is neither omniscient nor omnipotent; all his abilities come directly from the records of Akasha.

Rather than an 'omniscient and omnipotent God,' He is more like a manager, the manager of the world recorded by Akasha in the 'Future Diary.'

When Deus foresaw his own death, he hoped to select twelve future diaries to play a game of choosing gods among them, and the last survivor would become Deus's successor and take control of the throne of God who would rule over time and space.

The winner of that game was Yuno Gasai, and Tsubaki Kasugano was the only candidate who could compete with Yuno Gasai.

But she voluntarily gave up the opportunity to become a god, allowing Yuno Gasai to cut off her head.

At the moment of being beheaded, Kasugano Tsubaki died, but not completely.

Her physical body is dead, but her 'soul' still wanders in a world called 'Future Diary'.

This allowed her to witness Yuno Gasai inherit Deus's throne and witness Deus's fall on July 28.

With Deus's death, the old world came to an end.

However, Yuno Gasai, who inherited the throne of God, did not rebuild the new world. Instead, she wandered through the Akasha Records, trying to find a new world in those countless dimensions, a world with Yoshikage Kira.

That is, reality.

However, her efforts were ultimately in vain.

Entering the dimensional world from reality is simple; often all you need is a dump truck.

Even gods who control dimensions cannot enter reality from another dimension.

Because reality rejects everything from another dimension, the more powerful an existence is, the more obvious the rejection becomes, especially for gods.

So even if Yuno Gasai were to actually find reality, she would be blocked by a thick barrier, destined to be unable to enter reality and interfere with its affairs.

however,

There are exceptions to everything.

Yuno Gasai cannot find reality, nor is she destined to enter it.

But Altair can.

She can avoid the rejection of reality and remain in reality, or she can break the shackles between reality and dimensions and bring dimensional life into reality.

Therefore, she made a deal with Yuno Gasai.

Altair gives Yuno Gasai the 'coordinates' of reality and tells her how to enter reality:

Gods cannot enter reality, but dimensions can temporarily exist in reality.

Once dimensions merge with reality, life forms from those dimensions can enter reality.

Of course, this is on the premise that she is not a god.

Because gods cannot enter reality.

Therefore, even if the dimension and reality merge, only the 'ordinary people' of the dimension can enter reality, not her, the god.

Unless she relinquishes her divine status.

However, giving up her divine position would mean losing the power to merge dimensions with reality, ultimately resulting in nothing.

Therefore, Yuno Wagashi chose a compromise.

The 'Future Diary' dimension she inhabits cannot be integrated into reality because a new god has been born in this world, and there is no future to speak of.

In that case, let's find the second playthrough of "Future Diary" dimension before the story begins!

Once such a world is found, the rest of the world becomes very simple:

The first step is to merge the dimensions of the first playthrough of "Future Diary" with those of the second playthrough of "Future Diary".

Thus, the two worlds that are merged into one will share a common future, and can thus integrate into reality.

The second step is to integrate the merged 2.5-cycle world into reality, allowing the 'future' of the 2.5-cycle to unfold in reality.

When the plan reached this point, Kasugano Tsubaki's memories came to an abrupt end.

When she opened her eyes again, she saw her parents; she had been reborn as a baby in swaddling clothes.

Although he didn't experience it firsthand, Kasugano Tsubaki could still roughly guess what would happen next:

Since Yuno Gasai, as a god, cannot enter reality, she will strip away her authority through the "Future Diary"!

This game is both the past of the first playthrough and the future of the second playthrough; it is a predetermined cause and effect.

This is the third step.

Following the established cause and effect, Yuno Gasai's plan proceeded very smoothly.

She successfully used the predetermined future as an anchor point to completely separate herself from power.

Thus, having lost her divine status, she was able to enter reality.

For Yuno Gasai, this was something she had longed for.

But for Deus in his second playthrough, this was a completely undeserved disaster—

Yuno Gasai is a god, and Deus is also a god. Moreover, they are gods of the same dimension, and the authority they wield is completely identical.

The moment my wife Yuna separated herself from her authority, Deus’s authority was also stripped away at the same time, without his complete knowledge.

Deus cannot enter reality, nor can he interfere with it.

So He could only watch helplessly as this game called "Future Diary" unfolded.

Fortunately, this game of choosing gods also successfully brought Deus into contact with reality. He could use the 'meeting' to draw the 12 participants into his own divine realm, as recorded in the Akasha's records.

However, this method has a relatively high 'delay'.

When He first convened the meeting, four future diary holders had already died, and their diaries were missing.

This prevented Deus from reclaiming his authority all at once by killing other holders, leaving him to watch the game continue, even though he did not want a winner to emerge.

If no winner is determined by the end of July 28, the stripped authority will automatically return to Deus.

But Deus will not sit idly by. He cannot interfere with reality, but he hopes to intervene in this game.

His victory would be achieved if at least two Future Diary holders remained alive by July 29th.

To this end, He used the Akasha Records to create entities called 'Observers', attempting to use Observers to influence reality.

However, since Deus cannot interfere with reality, He also cannot control the corpse called the Observer in real time, and can only give it the mission of stopping the game from the beginning.

however.

This plan ultimately failed.

Because at the moment the 'Observer' Akise was born but not sent to reality, Altair, who had been guarding reality all along, had already killed him, and his essence was also integrated into his father, Yoshikage Kira, by Altair.

This essence connects Yoshikage Kira with 'Aru Akise' from other dimensions, which is why he appears in the first timeline, taking over Akise's body. This is also why he can enter Deus's divine realm, because in Deus's eyes, Yoshikage Kira is the observer He created.

Thus, the cause and effect belonging to Yoshikage Kira completed its cycle the moment he entered the realm of the gods.

Deus died because His cause and effect had also completed a closed loop earlier:

When the game ends, on July 29th, Deus will reclaim his authority.

This is the cause and effect established in reality.

当7月28日来临时，Deus将会死去，这是在1周目、2周目以及2.5周目共同存在的因果。

However, in reality, the game ended on July 29th.

当7月29日的Deus收回权柄时，祂就已经在无形中避开会在7月28日死去的因果。或许未来的祂依旧会在某一年的7月28日死亡，但那不会是今天。

therefore.

Yuno Gasai must make Him reclaim His authority ahead of schedule on July 28th.

The method is also very simple, because there is more than one way to lose a game:

If two or more Future Diary holders survive on July 29th, the game will fail because no winner has been determined.

If all Future Diary holders die at the same time before July 29th, the game will also fail because no winner is determined.

But this day must be limited to July 28th.

Otherwise, Deus, having reclaimed his authority, would know his death in advance and have enough time to detach the dimension from reality.

Only on July 28th could Deus, who had regained power, face his inevitable death on the same day.

This is the second scenario.

Everyone died at the same time and was pulled into Deus's divine realm at the same time.

They died, but not completely.

Theoretically, they should have died in the explosion, but Yuno had already left a contingency plan before the game started:

If all members die at the same time, they will be pulled into the realm of the gods to avoid death.

In short, they are exploiting a bug right now.

Deus's death was inevitable, but their deaths were not yet a foregone conclusion.

Having regained his authority, Deus gradually pieced together the events, but a deep sense of bewilderment remained in his heart, and he asked:

"why?"

"There's no reason why—it's a necessary sacrifice."

Yuno Gasai tilted her head, revealing a sweet smile. A bloodstained axe slipped from the cuff of her right sleeve and was tightly gripped by her fair hand.

She didn't want to die, nor did she want to be rejected by reality; she wanted to be with Kira forever.