I use Yugioh to battle the multiverse

In the Goetia control room, Ellen looked at the screen in front of her that reflected the scene outside the ship, and her heart skipped a beat---

[Wizard]

Raising his hand to block Goetia, Katsu breathed a sigh of relief. It was a close call, but luckily he made it in time...

Then, he raised his eyes slightly, staring at this huge airship, looking at the window over there - as if he was looking through the glass partition at Ellen inside.

Watching this scene on the screen, Ellen's pupils shrank violently, and then she fired all kinds of artillery fire from the Goetia without any hesitation. However, a barrier appeared in front of of Katsu and instantly expanded, blocking all attacks.

brush!!

The top of the wand with the dragon mouth open and a small, bright sphere of energy forms inside. Suddenly, it swells and grows rapidly, transforming from a tiny spark to a huge, glowing orb, radiating with intense power. The energy pulses as it reaches full size.

[Burst Stream of Destruction]

brush!!!

The beam passed through Goetia's left wing.

The next second...

Boom boom boom!!

A violent explosion sounded from the Goetia - and then a terrible thing happened - the left wing of the Goetia was broken off and fell from the sky, the fracture left a dented round hole. 

Goetia struggled to stabilize, but with its symmetry shattered, its flight became erratic, spiraling in a desperate, uncontrollable descent.

Katsu withdrew his wand from Goetia's "forehead", and then the huge "battleship" immediately followed the path of its left wing...

...…

Inside Goetia, feeling the slight sense of weightlessness and the piercing alarms of blood-red exclamation marks on the screens, Ellen smashed a button in front of her without any hesitation, and a circular hole immediately opened above her head - that was the emergency escape hatch.

She activated her own DEM, the strongest manifestation device, and with the help of the propulsion device, she easily rushed out of the escape hatch and hovered in the air alone. She lowered her head and looked at Goetia, who was falling rapidly below with black smoke, with mixed feelings.

However, before she could make any other moves, a familiar yet strange voice suddenly rang in her ears: "You should go down with your spaceship."

As soon as the voice reached her ears, Ellen turned her head in an instant, and the strong force hit her shoulder---

"Cough---" Ellen was knocked down in an instant and coughed out a mouthful of blood. The whistling sound of the wind continued in her ears. Ellen wiped the blood from the corner of her mouth and tried her best to activate the Territory field. She finally stabilized her body.

She raised her head and looked at Katsu who floating were higher than her with gnashing teeth. Annoyance rose in her eyes. When had she ever been so miserable as she was now multiples defeat by the same person... Even if it was the Wizard... I would kill Wizard today!

"... Shoot him through! Rhongomiant!" Ellen roared, and two huge machines instantly descended from both sides behind her---

Buzz---

A golden beam of light rushed straight towards Katsu with an incoherent and throbbing energy, as if it wanted to swallow him up in the beam of light and turn him into ashes.

However, facing the terrifying light column that was enough to make anyone retreat, Katsu's expression remained calm. He just raised his hand slightly and activated a trap card, a magic cylinder appeared in front of him, and swallow the attack sucking it all like a black hole.

Ellen's eyes widened. No harm was done?

Then another cylinder appeared and pointed in her direction and her own attack fire out of it. Ellen was engulfed by the beam of light. When the attack had dissipated like smoke Ellen armor is badly damage and small burn cover her whole body.

"It's quite powerful. Do you have any other tricks?" Katsu looked at Ellen with a faint smile that seemed to have some unknown meaning.

"Bastard..." Provoked like this, Ellen was furious. She drew out the lightsaber behind him and soared into the sky, aiming directly at Katsu!

Katsu smiled and shook his head: "Impulse little girl~" As he said that, he raised his wand smiled as he rushed towards Ellen who was rushing towards him---

Clang--! !

The lightsaber and the wand collided with each other. Although neither of them was made of metal, an incredible sound of metal clashing was heard.

"Wow... despite being damage like this you still have a lot of stamina does Westcost ever praise you like me you masochist bitch." Katsu raised his eyebrows and said jokingly.

"Bastard! Bastard! Bastard!!" Ellen gritted her teeth and cursed, turned around and slashed horizontally with great force!

Katsu raised his wand and blocked the attack casually. At the same time, he pushed it back and raised his wand as countless magic circles surrounding her.

Countless beams rain down on her.

Boom! !

Ellen's Territory field flared brightly, absorbing the impact of Katsu's sudden attack, though she couldn't fully withstand it. The force pushed her back several meters. 

She pulled back and countless shells flew out from behind her. No matter how confusing the trajectory was, the final target was all directed at Katsu.

Yet Katsu was unfazed. His own pink barrier flared to life, expanding and shifting like a living shield. It morphed to intercept each shell, dissipating with ease, Katsu himself simply ignored the feint of the artillery shells, penetrated the smoke, and rushed towards Ellen.

This time, their battle reached a new level of intensity. Both Ellen and her opponent, Katsu, moved with blinding speed, their weapons slashing through the air. Each swing and thrust left trails of light, punctuated by a relentless shower of sparks as their weapons clashed, filling the air with the sound of shrieking metal and crackling energy. 

For now, they seemed evenly matched, but Ellen felt her frustration growing. No matter how she changed her moves, the opponent would be able to block her attack at the right angle and in the perfect position.

How could she not understand this? The opponent was playing tricks on her!

Of course, Katsu didn't know what Ellen was thinking at the moment. If he knew, he would definitely cry out that he was wronged. He really wasn't teasing Ellen on purpose. He was just not used to his current powerful strength and couldn't use it perfectly, so he forced Ellen to feed him moves so that he could quickly adapt to such power.

The battle escalated into a dizzying storm of speed and power. Ellen and Katsu became blurs in the sky, one blue and one gold, clashing and splitting apart in rapid succession. 

Yet amid the display, Ellen's face twisted in frustration and rage. Her breaths came heavy, her movements slightly strained as she pushed herself beyond her limits, throwing everything she had into each attack. But the realization burned within her—no matter how hard she tried, how much faster or more forceful she became, Katsu remained unperturbed. He matched her every move effortlessly, his expression calm and collected as if he weren't even breaking a sweat.

A sickening certainty settled in her gut. He was toying with her. He was simply mirroring her, as if testing her strength for his own amusement. Every ounce of her skill and effort felt like it was being mocked. She had already tried her best, but the other party was still calm and maintained the same offensive as hers.

"Enough!" Taking advantage of the gap between the two attacks, Ellen roared angrily, then activated the thrusters and quickly moved away from Katsu. Then, all the long-range weapons on her body were fired at Katsu without any hesitation--

After one wave is over, another wave will come. No matter how close Katsu gets, she will use all her strength to drive the thrusters and will never fight with Katsu in close combat again.

The sixth attempt to approach him failed. Katsu looked at Ellen, who was attacking him from a distance like a loach, and he couldn't help but sigh---

"Really... do you really want to die like this?" As he spoke, Katsu looked up at Ellen with a half-smile. As he keep on intercepting all her attacks to consume her strength.

...

On the top floor of the Hotel, in the presidential suite, Westcott, who was drinking coffee, had a gloomy expression on his face. After a while, he put down the cup.

"Ellen lost... Never mind, this is only natural. After all, the opponent is the Wizard."

Take a deep breath, then take out your phone---

He just uttered a few words softly: "Launch the satellite aim at the Ratatoskr airship above Tengu City"

… …

In outer space, a satellite was facing the Earth, emitting a blazing golden light.

Seeing Ellen almost exhausted the green barrier around Ellen gradually dimmed, Katsu's smile grew stronger. However, at this moment, his eyes suddenly trembled, and then he clenched his fists and glared at Ellen fiercely: "How many space weapons are there in Dem."

Then, without even glancing at Ellen, he soared directly into the sky and rushed towards Fraxinus.

Inside Flaxinus.

The piercing red alarm continued to sound, and the crew's panicked voices rose one after another.

"Commander! We've been locked down!"

"Commander! This is terrible. This is DEM's space-based weapon!"

"According to calculations, the Territory field of Fraxinus cannot resist..."

"Commander..."

Kotori, who was sitting in the command chair, had her brows twitching at this moment. Facing the constant voices of the crew members, Kotori gritted her teeth tightly, and sweat appeared on her cheeks as she lowered her head.

"Commander! Look at the main screen!" At this moment, Kyouhei Kannazuki's voice suddenly rang in Kotori's ears. Subconsciously, Kotori raised her head---

Then his eyes suddenly widened.

On the main screen, a shimmering blue figure materialized, standing atop the massive ship, Fraxinus. He held a glowing book [Magic Formula] in one hand lines pulsing with energy. In his other hand, his wand pointed skyward, channeling raw magical power.

With a commanding gesture, a pink barrier unfurled from a floating book beside him, expanding outward in an enormous arc. The barrier spread across the sky, shimmering like a protective dome as it enveloped the entire ship. Fraxinus lay safely within this shield.

"Here it comes!" a crew member suddenly shouted.

Then, everyone saw a dazzling golden light appear from the distant sky. Then, in the blink of an eye, the light turned into a second sun the dazzling light made it impossible for everyone to open their eyes...

After a few breaths, as if she noticed the light outside her eyelids dimming, Kotori nervously opened her eyes. Although she was not hurt at the moment, she was nervous because she was afraid that Katsu, who had protected them, would be hurt.

At the top of Fraxinus, Katsu looked at the huge overlapping barrier in front of him he managed to block the satellite attack.

Next when his adrenaline calm down the side effects kicks in from maintaining [Polymerization] the fusion of Mana and Kisara for too long. 

The next moment---"Ahhhhhhh!!!!" Katsu roared in pain as he felt intense pain all over his body. In an instant, his long blue hair turned back to short yellow, the dragon tattoos faded and melted, and the staff turned into light particles and dissipated---

Katsu felt as if his brain was hit by a heavy hammer, and his eyes went dark, and his consciousness fell into darkness. Luckily before he fall down Mana and Kisara exit from his body and catch him from dropping.