The rifts in space-time must be closed. For that to happen, both Origami and Kotori need to "live" their past to leave a mark in history—a reference in the world's database—so that the timeline doesn't collapse.
For example, Origami, although currently resting and accumulating energy, is subconsciously living another life.
"Darling, does this mean our future depends on Origami-san?"
Depending on others wasn't something Miku liked. Although she trusted Origami, their friendship hadn't reached the point of complete trust, so she was worried.
"No, Oririn has to 'live,' but it's Yui-kun who must fix the timeline."
As the bearer of Rasiel, Nia understood what was happening and explained it.
"Question, how do we fix the timeline? And what should we do?"
"I want to know too."
The Yamai sisters were also eager to help, and of course, Yuki needed their assistance.
"We need to travel to the past of the other timeline."
Yuki is confident that Origami won't be in danger, but her mind might not be able to handle it. Therefore, Yuki must enter the other dimension and create the 'history' that was supposed to happen but is incomplete.
"If possible, I'd like all of you to come with me. Unfortunately, because the dimensions are clashing, too many people will cause Zafkiel to lose control of time, and we'll fall into the River of Time."
The force required to traverse dimensions is no joke. Even though Yuki is a Low-Level Destructor, he won't risk falling into wormholes that could lead to unknown places or times. Therefore, only he and one other person will accompany him.
"...."
All the spirits exchanged glances, even Est and Eggy in the spiritual world. They couldn't accompany Yuki either. This also applied to Aiwass. In fact, Yuki would have to give up his World Spiritist power to travel, and his spiritual power—the breach Yuki would create in the dimension—was too small for his spiritual world to follow.
So, although Yuki's energy wouldn't change, he would only be able to rely on his Uchiha power for this mission.
Still, Yuki already knew what he had to do and who would accompany him. He looked at the cute witch with a pointed hat, who seemed unconcerned as if what was happening had nothing to do with her.
"Natsumi, will you come with me?"
"Huh? Me?!"
"What?!"
Except for Kurumi and Nia, everyone else exclaimed in surprise. They couldn't understand why out of all the girls, it had to be Natsumi. Even Natsumi pointed at herself in disbelief. In fact, even Mana thought she was better suited than Natsumi.
"Are you sure, Nii-sama?"
"Definitely, it has to be her."
In that timeline, Yuki would have his shinobi abilities, and his Sephira crystal would be sealed. However, he needed Natsumi's ability.
Miku, Tohka, and Mukuro seemed unconvinced, but after Yuki explained that Natsumi's Angel was the only one whose power wouldn't be hindered in the other timeline, the trio pouted and stepped back.
"...."
Everyone turned to Natsumi, who couldn't help but shrink under their expectant gazes. It hurt to be the center of attention, yet Natsumi wasn't brave or daring enough to refuse.
"Natsumi, I won't force you, but I can't do this without you. I sincerely hope you'll lend me your strength."
Yuki took her hand and looked into her eyes. At this moment, Yuki regretted not being a Shota anymore—after all, women had no resistance to his requests when he was a child.
"Alright, alright! I'll go with you, but stop looking at me like that!"
In the end, Natsumi gave in to the pressure. Of course, it wasn't Yuki's pressure, but the pressure from the other girls, each of whom looked at her with envious eyes, wishing they were in her place. Even the Yamai sisters were no exception, leaving Natsumi no choice but to agree.
"When do we leave?"
Not wanting to be the target of everyone's attention, Natsumi asked with a hint of urgency, hoping to get this over with as quickly as possible.
"In about three hours, Origami will create another spatial quake. We'll leave then."
Closing his eyes to share senses with his clones watching over Origami, Yuki sighed.
"Until then, rest..."
"Alright..."
"I'm going to prepare. Kurumi, come with me."
"Alright, Danna-sama."
In three hours, the sun would set, and since dimensional travel consumes a lot of energy, Yuki couldn't wait any longer. He decided to send Kurumi to his crown. But since everyone was gathered, Yuki needed an excuse, and this worked perfectly.
Kurumi, of course, knew what he wanted and smiled mischievously, following him. Miku was suspicious and wanted to follow, but a hand gently rested on her shoulder.
"Hya~ Mikki, you're one of us, right? Why don't you tell us about yourself? You know, I love your songs; I'm a big fan!"
"Huh?"
Nia, acting as an accomplice, smiled and held onto Miku tightly, who blinked in surprise.
"Curious, does Miku-san sing?"
"What? Are you an idol or something?"
The Yamai sisters were also intrigued by Nia's question and surrounded Miku, whose face turned red and whose heart raced. Being surrounded by so many cute girls made her excited.
"Hmm! Um! I've heard her before with Yuki; she sings very well!"
With Tohka's confirmation, even Mukuro became interested and approached, giving Miku the pleasure of being surrounded by beautiful girls, making her forget that Yuki and Kurumi had disappeared.
And Nia, the mastermind behind it all, smiled even wider.
(Hya~ Have fun.)
In her heart, Nia gave a thumbs-up to the couple.
(TN: heh always me covering up)
Meanwhile, Yuki and Kurumi had to concentrate. Yuki's spiritual world hadn't fully recovered after assimilating Nia, so bringing Kurumi along was a huge risk, especially since she was one of the three spirits whose danger could awaken the Demon King.
Even so, Yuki couldn't wait. If Kurumi and Zafkiel united, the danger of the journey would be greatly reduced, so it had to succeed.
Kurumi had no objections either. As the cause of the dimensions clashing, she felt a bit guilty and wanted to fix everything just like Yuki.
"Are you ready?"
"Yes, Danna-sama."
With great care, the two carried out the act...
--------------------------------
At the same time Yuki was preparing, others were too. The clash of dimensions was the beginning of the ultimate battle.
DEM was an example of this, seizing the moment when Yuki's hands were tied to gather all their troops along with their warships and fly into space.
The first spirit had already warned them that Yuki possessed Rasiel, so they couldn't hide their movements. Now was their only chance to counterattack; otherwise, Yuki might intercept them in space.
"Is it okay to trust her, Ike?"
Aboard the warship flying through space, Ellen couldn't help but ask after mobilizing all their combat power.
Although the fleet Yuki had taken down before was numerous, it didn't compare to the one they had now mobilized.
"She has no reason to deceive us. Besides, she needs us even more than we need her."
Westcott wasn't worried about the first spirit playing games with him. He could sense that the first spirit was cornered at the moment, so she needed their help...
"...."
Ellen said nothing more, though she remained unconvinced, staying on guard and ready to act at any moment.
"We're here..."
Thanks to their technology and magic, the ships, after making spatial jumps and flying for some time, Westcott and his fleet arrived at their destination—a massive red planet...
"Mars, such a grand seal, I must admit this is magnificent."
Westcott's eyes gleamed as he admired the great work of art before him, so well-hidden.
If it weren't for the first spirit, Westcott would never have guessed that this planet contained a great secret...
"Alright, let's begin. Let's release our spirit of origin."
*BOOMMMMMMMMMM*
At his command, the warships began bombarding the red planet with everything they had. After all, this was the place where Yuki from the first timeline had sealed Mio Takamiya....
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