A few moments earlier…

In Slime#47's soul dimension, the scroll unfurled as the slot next to the half-closed eye became visible.

'Which spell or skill should I store?' Slime#47 mused, rubbing his chin.

"Wait… can I store Professor Seralyth's power?" he muttered with a sly smile. 'If I could… hehe.'

Pointing his palm toward the empty slot, he drew her power from his core and pressed it onto the scroll.

[ Ding! The Ancient Combat Style rejects the unknown power! ]

"What?" Young Slime's eyes twitched. His hope of strengthening the Demon King's power was crushed.

----

"You cannot store whatever power you like," Nobi explained. "It allows only your energies."

'Just like the human body rejecting a foreign object,' Slime#47 mused.

They both glanced at Thomas, who was fixing the array. He also nodded. "Only your skills or spells can be stored, and you must have the knowledge of the stored spell/skill on how they function."

In the soul dimension…

After a moment, he decided, "I'll store a defensive spell."

He'd started to care more about his life than before.

"If this were a previous loop, I might've gone with an attack spell—most definitely Demonic Pulse," he muttered, checking his arsenal.

"Demonic Cloak."

He cast it, pointing his right arm at the empty slot in the opened scroll.

Demonic force surged from him as the black cloak symbol formed within the empty slot.

"The eye is closed," he said, noticing the golden eye fully shut as the scroll closed.

Then—

[ Ding! Ancient Combat style status

Slot#1: Demonic Cloak

Battle growth: 0% ]

A shimmering panel flashed in his vision.

He nodded, satisfied.

---

Back to the present…

Boom!

ZZZ!

Both Nobi and Slime#47 slid back a few meters from the impact of their fists.

Their fists still glowed with their respective black demonic force and blue water force.

"Demonic Pulse!" Young Slime cast, wasting no time after he balanced himself.

A dark beam dashed toward Nobi.

"Aqua Ray!" Nobi responded quickly, as a blue beam rushed out from her right hand.

Bam!

Both the blue beam and the dark beam collided.

"You are a true demon?" Young Slime asked as his beam began to overpower the water beam while he exerted more demonic force.

'According to Elder Slime… only those who use demonic magic can be called true demons,' he mused.

Nobi replied with a small grin. "Well, technically, only those who use demonic magic or dark magic are called demons by human scholars—while we call only those who use demonic magic as true demons, but—"

Bang!

Nobi jumped aside as the water beam was overpowered by the black beam and hit the arena.

Smoke and foam burst out as the spot where she had stood turned faintly crimson from the high-powered energy.

"Water Sword Slash!"

A water-condensed energy slash rushed toward Slime#47 from his right side.

[ Ding! Growth increased by 1%

Growth: 1/100% ]

[ Ding! Ancient Combat Ctyle proficiency +1! ]

A notification flashed in Young Slime's vision, but he didn't care.

"Demonic Surge!"

He leapt to his right, dodging the slash attack.

Just after he landed, he noticed a sword strike from above.

Young Slime's eyes met Nobi's as the glowing blue sword was just a few inches from him.

'She's too fast,' he clicked his tongue.

"Demonic Cloak!"

A dark cloak materialized on his back, and he pulled its edge around himself.

The glowing blue energy sword hit him dead center—on the chest.

Bang!

Young Slime slid back a few meters due to the impact.

Nobi stood playfully with a grin.

She said, supporting her sword on her nape, "Those who are descendants of the Demon Kings can also be called true demons, despite not possessing demonic magic."

Whoosh!

She flashed in front of Slime#47 as she swung her sword, channeling Tide Magic through it.

"Torrent Sword Flow!"

Water materialized in the world, as transparent blue liquid flowed along her sword as she swung it at Young Slime.

'I can't take that head-on… It's powerful,' Slime#47 sensed enormous power from her sword.

He reacted quickly. "Demonic Surge. Double Elemental Shield. Demonic Cloak!"

Two multicolored rectangular barriers formed in front of him, covering his front area, and next was the demonic cloak, which covered him from all sides.

Dark demonic force surged out of him, increasing his endurance.

Her sword connected with the barriers.

"It's heavy," he muttered, feeling the sword.

'She's not even using boost skills… Is this what a true genius means?' Slime#47 was impressed by the power of a genius from Demon King Remora's time.

For the first time, he met someone who could casually spar with him in the same tier while not using any boost skills.

'Her masteries… they're higher than mine,' he clicked his tongue, finally understanding the reason for such strength.

Crack!

The water energy emitted from the sword shattered the barriers.

And it collided with the cloak!

Boom!

The energy cloak withstood the impact for only a few moments before dispersing into thin air.

The sword proceeded, rushing down.

Thud!

Young Slime reacted quickly and held her blade with his two hands, stopping it from moving forward.

'Damn… it's heavy… and powerful,' Slime#47 mused. 'I need a better defensive skill. The cloak isn't enough.'

The cloak was good for him when attacked from all sides, and when he stayed still in one area, but… 'I cannot strike back with this skill.' He spotted the weakness.

[ Ding! Growth increased by 1%

Growth: 2/100% ]

[ Ding! Ancient Combat Style proficiency +1! ]

Nobi pressed her sword down with a little more pressure, as shockwaves spread across the arena.

She was still in the air, as Young Slime held the blade with all his might.

"Demonic Surge," he muttered, burning the demonic force crazily.

"Not bad," Nobi nodded. "But what about now?"

"Torrent Sword Flow!"

Water erupted from the sword as blue energy increased around her blade.

"Crap, it's dangerous," he muttered, as his arms trembled a lot.

Crack!

The arena beneath his feet had a few small cracks.

"Demonic Surge!"

He backed away, pouring in a lot of demonic force, breaking from the clash by leaping back.

'I burned almost 50% of my true magic reserves trying to hold that sword,' he realized just how much of a beast she was.

He questioned, his eyes narrowing, "So if you are a descendant of a Demon King, you'll be labeled as a true demon directly?"

"Yes," Nobi nodded, and swung her sword up.

"Tidal Sword Slash!"

A condensed water slash rushed toward Young Slime.

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