I use Yugioh to battle the multiverse

Main Timeline ---

At 10:30 in the evening, in a large dormitory ward with several beds in the city hospital, Katsu, Miku, Kaguya, Yuzuru, and Tohka were sitting on their beds.

Although Katsu had almost no scars on his body compared to the four elves who were covered in wounds, his pale face, white lips, and languid mental state showed that he was in the most serious condition among the others.

In addition to a few wounded people and Shidou who had been rescued following Katsu, Natsumi and Yoshino who had already escaped from the shelter were also staying there.

But because it was very late, the two little ones had already fallen asleep in one bed.

… …

"… Um… Katsu, are you… really okay? You've had a high fever of over 40 degrees for so long, and there's no sign of it going away…"

Katsu shook his head weakly and forced a smile: "It's okay, it's just a side effect... I won't die."

"… …" Shidou said nothing, sighed, then turned around and went out to call a doctor.

As soon as Shidou left, the other patients on the beds couldn't help but look towards Katsu---

"Mitsu-chan? Are you really okay? Let me use [Fantasia] to heal you..."

"It's useless... Even Kurumi's Fourth Bullet won't work..." Katsu shook his head, smiled at Miku and said, "Don't worry, I'll be fine."

"How did you end up like this?"

"Well, it's a long story---"

"Katsu, do you want to eat something? I'll ask Shidou to buy some later---"

"...Tohka, you're hungry, so let Shidou go buy something."

… …

"…So, did Ms. Origami achieve her goal?"

Under the bright moonlight, Kurumi, who was sitting on the edge of the rooftop of the building, murmured to herself.

"Hehe, who knows?" The same voice as Kurumi's sounded from the shadow and responded to Kurumi.

"I'm afraid it won't work. The world is very strong, how can it be destroyed so easily because of a girl's wish?"

"Oh, that's hard to say. Look at Miss Origami. She has such great power. Maybe it's possible but Katsu maybe has a better chance to change the timeline than her."

"'I', what do you think?" The chatty clones spoke one after another. After letting out a breath, Kurumi shrugged slightly: "I don't know what to say. However, as far as my personal expectations are concerned, I hope Origami will fulfill this wish."

After Kurumi said this, the clones in the shadows chuckled. "Hehe, this is really not something I would say. Is this also because of the influence of that Katsu-kun?"

Hearing [herself] words, Kurumi raised the corners of her lips and looked up at the full moon floating in the sky.

"Well, maybe... I heard that a girl who is in love will have a lower IQ..."

As Kurumi said this, she supported herself on the edge of the roof with both hands and leaned back slightly---

"Ah... I have really changed a lot."

… …

… …

At Westcott's exclusive presidential suite.

"Thank you for your hard work, Ellen." Westcott rubbed his temple while sitting on the sofa.

"… …" Ellen did not respond. She was still immersed in the quagmire of being easily defeated by Katsu, unable to extricate herself.

"Huh..." As if he had seen what Ellen was thinking, Westcott exhaled softly, then leaned his head on the sofa and said in an unrecognizable voice: "I know what you are thinking. It is not shameful to lose to the Wizard. On the contrary, you have been able to hold out in the hands of the Wizard for such a long time, which is already amazing. What's more, you have completed the mission."

"… …" Ellen still didn't speak.

Seeing this, Westcott couldn't help but smile and shook his head, then turned the terminal on the table towards Ellen.

"Okay, don't think about the [Wizard] anymore. Isn't this more important and interesting now?" 

A certain picture was displayed on the terminal screen. --The figure of Tobiichi Origami in a pure white spirit outfit.

Seeing this, Ellen's pupils couldn't help but shrink. Although she also used the detection device on the ship to detect new spiritual wave reactions on the ground, she still couldn't believe it when she heard the report from the headquarters.

Because Tobiichi Origami turned into an spirit during the battle with the spirits. It was not until now, when she witnessed it with her own eyes, that she completely believed this fact...

"Haha, this is really beyond my expectations. I didn't expect that she would turn into a spirit." Westcott said, and he curled up the corners of his mouth and smiled as if he was happy from the bottom of his heart.

"No, I should be mourning the loss of an excellent wizard. Ah, this is such a bolt from the blue. She will definitely be a powerful force on our side."

"But... you're laughing." Because the Origami facts were so shocking, Ellen temporarily got rid of the disappointment of losing to Katsu, and finally spoke.

"Oh, that's so rude." Having said that, Westcott still didn't intend to hide his happy expression.

Seeing this, she sighed softly and continued, "So, where is she now?"

"Well, she seemed to be flying around Tengu not long ago, but her response suddenly disappeared."

"Reaction? Does this mean she has the ability to hide her spiritual power?

"Do you think so?"

"As long as you become a spirit, you will naturally become a target of our attack. It is only natural that you will hide your whereabouts, right?"

"Who knows. It's appropriate to think so, but - maybe that's why spirits are spirits because they don't play by the rules." Westcott said as he stood up from the sofa and walked slowly to the window.

Outside the window was a cloudless night sky with a bright moon sitting alone in the center.

"She might be watching us nearby," Westcott said jokingly with a smile on his face.

… …

… …

At this time, Shidou had brought the doctor over to help Katsu change the IV and the fever-reducing patch---

The itchiness in his throat made Katsu unable to help but cough violently a few times again.

Then, seeing the doctor leave, Katsu said to Shidou: "Shidou, go buy some food. Everyone must be hungry."

"Okay." Shidou responded quickly. Although it was like "running errands", he had no complaints. After all, the people present were all wounded, and serving the wounded---this also made Shidou feel that he was at least useful after being kidnapped.

Just as he walked out of the ward and came to the corner of the corridor, the cell phone in his pocket suddenly rang. Shidou quickly took out his cell phone. At this time, he had already guessed who was calling.

Sure enough, as soon as I answered the phone, I heard Kotori's voice from the other end---

"Shidou?"

"──Kotori! Is that Kotori?" Shidou answered the voice in an excited tone. After all, Kotori hadn't come back for so long, and Shidou had already started to worry. Now that he received Kotori's call, he naturally felt relieved.

"Ahh... Great, you're safe. Where are the others?"

"Everyone is fine - maybe it's not right to say that, but everyone is alive anyway."

"Really? That's a blessing."

"That's what I want to tell you. Where are you now? Is Flaxinus okay? I'm worried because I can't contact you."

After Shidou finished speaking, Kotori was silent for a long while, with only a sigh of regret coming from her.

"Kotori...?

"Ah - I'm in the underground facility of Ratatoskr. All the crew members are safe. But... let's just say we lost that battle. If it weren't for Katsu brother, the consequences would be unimaginable..."

"Eh...!" Shidou couldn't help but widen his eyes when he heard Kotori's sudden announcement.

"What…what does this mean?"

"...It means exactly what it says. We were defeated by DEM. The damage rate to the hull is over 2%, and it is currently under repair... However, it is not possible to use it as before for the time being."

"What...!" Shidou choked on his words. He was a little bit unbelievable, it's not that he couldn't understand what Kotori said.

However, his mind could not associate the Fraxinus with the word defeat. In his mind, Ratatosk was an extremely powerful and absolutely safe air fleet...

But when Kotori told him the truth, after thinking it over calmly, he could understand it...

The Fraxinus is a powerful airship... but DEM also has---

The so-called disbelief was nothing more than Shidou's arbitrary belief that Fraxinus was a place that could absolutely guarantee safety.

"The hull of the Fraxinus is damaged...! But isn't the performance of Ratatoskr's manifestation device superior to that of the DEM..."

"That's true, but... ever since DEM developed the new Realizer device, the gap between the two has become smaller and smaller. Plus, DEM has that woman."

That woman. The moment he heard this word, the face of a certain girl emerged in Shidou's mind. Light blonde hair like silk, and confident green eyes - the face of the strongest wizard, Ellen Mira Mathers.

Hearing Shidou's silence, Kotori thought that he probably knew the inside story. Kotori sighed and continued, "Speaking of which, it was us who dragged down Brother Katsu this time. If we hadn't been exposed to the DEM satellite's sight, Brother Katsu might have been able to get rid of that woman this time... Anyway, it's all over, and it won't help to keep bringing it up... By the way, how is Brother Katsu? Is he awake?"

"Ah, he has woken up, but he is very weak and has a high fever---"

"Earth...earthquake...?"

Such a sound came from the ward where Katsu and the others were, but Shidou instinctively felt that this shaking was not like an earthquake.

As a result, as if to confirm Shidou's intuition, something that was not a natural phenomenon at all struck the ward of Shidou and others.

Something that could only be described as concentrated, dark black light poured down from the sky, through the ceiling and floor, and into the lower floor.

So after a while, the light probably landed on the ground, and a stronger vibration than before shook the ward of Shidou and his group.

"Wow...! What...what's going on!" In an instant, Yoshino and Natsumi, who were originally sleeping soundly in bed, were instantly awakened by such a noise---

"What's going on?!"

"Hmm---"

"Elder brother…"

Katsu, who had no strength at all and was in great pain, looked downcast. He suddenly had a very bad premonition - a very strong one.

So he subconsciously turned his head and looked out the window --- his eyes gradually became dull ---

From the sky to the ground, countless black rays were drawn continuously. The rays easily penetrated the buildings lined up on the ground, causing them to collapse in an instant. Trees fell, vehicles exploded, and roads were broken. The quiet streets collapsed in an instant and turned into hell.

"Shit!" Katsu's eyelids jumped, and without saying a word, he pulled out the needle from his wrist, wanting to release his power to protect this ward and the corridor outside where Shidou was, but at that moment, the weakness all over his body and the stinging pain in his eyes made him completely unable to do it.

At this moment, the shrill alarm sounded, as if echoing throughout the entire city.

At the same time, an alarm sounded from the mobile phone that was still on the line. Although it was slightly different from the alarm sound of , it was unmistakable. It was the alarm sound indicating the appearance of the spirit.

Shidou in the corridor also widened his eyes---

"…! Kotori, this is—"

"It's a spirit! But, what's going on with this situation...! Without any signs, such a powerful... spirit appeared..."

Hearing Kotori's momentum suddenly weaken while she was speaking, Shidou frowned.

"Kotori? Hey, what's wrong with you?"

"This reaction is not an ordinary spirit. This is... an inverse form...!"

"What...!" Hearing this, Shidou's eyes widened.

Inverse form. Shidou had seen a spirit being called this before.

Shidou didn't know the static details, but he heard that spirits with powers different from normal would only appear when the spirits' hearts were filled with deep despair. The last time only Katsu can contain them when others turn now but he is now injured.

"Why... did the spirit of the reversed body appear?! Is it DEM's doing...?"

"I don't know! Anyway, it's very dangerous there! Hurry up──" However, just when Kotori wanted to urge Shidou and others to take shelter, countless rays of light exploded from the sky and easily destroyed the hospital where Shidou and others were.

The floor collapsed, and Shidou's body was easily thrown into the air. The cell phone fell from his hand and flew to an unknown place.

"Ugh... Uwaaaaaaaaa!" His body fell to the ground along with a large amount of rubble. However, at this moment, someone hugged Shidou's abdomen and pulled his body upwards, thus Shidou escaped from the rain of rubble.

"Cough… cough…!"

"Are you okay, Shidou?" Shidou kept coughing, and when he looked toward the source of the sound, he saw Tohka's figure.

Apparently, she picked up Shidou in a flash and fled from the collapsed hospital.

Her body showed her Astral Dresses that remained in its complete form.

Shidou looks back behind him---

At this moment, Katsu was held by Kisara's waist and flying in the air. Kaguya, Yuzuru, Yoshino and Natsumi were all sitting on Shion's ice puppet, and the others were also flying in the air, maintaining their limited incomplete Astral Dresses---

As Kisara slowly landed on the ground, Katsu stepped onto the ruined ground. He felt weak and sore, and almost collapsed to the ground. Kisara and Mana were so scared that they hurriedly supported him.

"Master, are you okay?"

With one arm supported by Kisara and other by Mana, Katsu said: "Ahem... It's okay."

As he spoke, he raised his gaze to the higher sky, which was the source of the spreading darkness.

"That is…" Katsu's right eyelid twitched violently. Finally, he saw the tiny figure in the void and made a surprised sound.

A girl was floating in the pitch-black sky, wearing a spiritual outfit that seemed to embody darkness. She hugged her knees, lowered her head as if rejecting the outside world, and floated in the air leisurely, ignoring gravity.

Then, countless pitch-black "feathers" floated around her, surrounding her layer by layer, as if protecting her.

It seemed as if that was the only place that was isolated from the hellish scene and was full of peace and tranquility.

The appearance reminded me of a fetus floating in the amniotic fluid.

However, it was not the strange posture of the elf that gave Katsu a strong sense of foreboding. Because she was curled up, it was impossible to peek into her face and expression---but Shidou's whisper not far away made Katsu's pupils shrink instantly.

"Is that... Tobiichi... ?"

Katsu swallowed subconsciously. The strange sense of oppression that was clearly just floating in the air could be strongly felt by people.

There is no doubt that it is an Inverse form...

The Inverse form --- that was another form created when the spirit felt deep despair. In other words, in this short afternoon, Origami had just become spirit and she had felt enough despair to reverse herself ---

"What happened?" Katsu's eyes were already a little distracted. His body was too weak. However, the current situation did not allow him to rest. He reaches for his card [Solemn Wishes] uses the charges he stored from the last battle and forces himself to heal.

The rain falls down on everyone's faces but they are too focused on Origami to notice that Katsu's wound slowly healing and his condition is getting better but only he has healed half of his HP before the rain stops and runs out of healing. This is the only healing he can use right now the fatigue can't be cured by healing.

 However, at this moment, black rays like rain burst out from the sky again, making all the surrounding facilities even more broken, buildings collapsed, and roads torn apart. Because the time from the space earthquake alarm to the rays falling from the sky was only a matter of seconds, the citizens had no time to evacuate. Just from what Katsu saw, there were no less than ten residents who were indirectly or directly killed by the purple-black light.

But... under these circumstances, rescue operations are impossible and the disaster has spread to the entire city.

"Cough cough cough cough!" After a violent cough, Kisara patted his back in pain for a while, and Katsu felt a little better now he could stand on his own thanks to his card. Then, he swallowed his saliva and glanced at the people around him, only to find that everyone's eyes were focused on him. He had become their backbone without realizing it.

"Everyone---" Katsu said in a hoarse voice.

In an instant, everyone's attention was focused.

Katsu cast his gaze towards Shidou, coughed a few times due to an itchy throat, and said, "Shidou, this time's strategy... is left to you."

Shidou was stunned for a while after hearing this. 

The eyes gradually became firm---

"Well, I will try my best to wake her up!"

Katsu nodded in satisfaction, then glanced at everyone: "Everyone... lend a helping hand to Shidou!"

"Tohka---you are the only one who has the strongest fighting power among all the people, so please lead the way---"

"Yes! Leave it to me!"

"Kaguya, Yuzuru, can you two protect Shidou from both sides?"

"Well - although I would rather stay and protect Katsu, but in this emergency, I will listen to Katsu."

"Agree. Yuzuru has no problem with that either."

"Ahem...Miku, please use your ability to enhance everyone's combat power and treat the injured at any time."

"No problem, Mitsu-chan, you don't have to be polite to me~"

 "Yoshino and Mana, I'll leave the ground to you. Use the ice puppet to deploy a barrier or magic shield to block the incoming light. 

"Leave it to us!"

"Natsumi, help those trapped under the rubble..."

"Hmph - there's nothing I can do. I'll just help you. These are just rubbles. I'll turn them all into cotton -"

"I can't fight right now so I leave them in your protection Kisara"

"Don't worry master no one will die in my sight"

Katsu let out a sigh and a satisfied smile appeared on his face. The scene of everyone working together for one thing was really beautiful.

"Everyone --- come on! Wake up Tobiichi-san!"

"Okay - let's go! I'll lead the way! Follow me!" Tohka shouted loudly, kicked the ground, and leaped into the sky.

"good!"

At the same time, Shidou's body, surrounded by the wind released by the two, also floated lightly in the air.