"What do you think you're doing?!" The Demon Lord immediately noticed Yuan gathering his spiritual energy, clearly preparing for an attack, and it immediately rushed at him.

However, the grandparents also went to block its path.

"You think you can just ignore us?"

Pap!

Grandpa Lan slapped the Demon Lord with its powerful tail, sending it further away from Yuan.

"Get out of my way—" Just as the Demon Lord roared, Yuan released the Heaven Splitting Sword Strike, completely missing the Demon Lord.

"Hahaha! Where the hell are you aiming?" The Demon Lord laughed in a slightly nervous tone afterward, as it felt the immense power within the strike released by Yuan just now.

'If that thing had hit me, I would've been in danger! This human is truly too dangerous to be left alive! Luckily, this human doesn't have any control over it!' The Demon Lord cried inwardly, thinking that Yuan had only missed because he doesn't have full control over the technique.

However, it suddenly noticed that Yuan wasn't even paying attention to it. Instead, he went to where the sealed demons were before they were 'accidentally' struck by the attack and picked up their demon cores.

'What the hell is he doing?' The Demon Lord raised its eyebrows at Yuan's puzzling actions.

A moment later, Yuan tossed one of the demon cores in his mouth, shocking the Demon Lord and the grandparents.

"Hahaha! What is that idiot doing?! Does he want to kill himself?! That makes things much easier for me!" The Demon Lord burst out laughing like a maniac after witnessing Yuan's actions.

"Young man! What are you doing?!" Grandpa Lan exclaimed.

While he knew that Yuan could consume monster cores, he was still shocked speechless by Yuan's actions just now. After all, demon cores are completely different from monster cores. If eating monster cores is akin to drinking water, then eating demon cores is akin to drinking alcohol!

Meanwhile, Yuan could feel his tongue beginning to burn after consuming the demon core.

"Demon cores are spicy!" Yuan exclaimed, recalling the first time he accidentally ate spicy food. However, the demon core was spicier than anything he's ever experienced before, feeling like he'd just poured a bottle of hot sauce in his mouth!

[Heaven Refining Physique Activated]

[??? Qi has been absorbed from the Demon Core]

[You have absorbed enough Qi for a breakthrough]

[You have reached first level Spirit Grandmaster]

[+Stats 25,000]

Ding!

[Your body has cleansed the impurities from the Demon Core]

[Demon core has been refined]

[Your skill 'Superior Regeneration' has developed into 'Perfect Regeneration']

[Perfect Regeneration]

[Rank: Divine]

[Description: Can restore even a missing limb]

When the Demon Lord, who was waiting for Yuan to explode from consuming the demon core, realized that Yuan was perfectly fine, even experiencing a breakthrough from it, the Demon Lord nearly lost its mind from shock.

"What?! That's impossible! How can a mere human consume a demon core?! You should've died the moment you ate it!" The Demon Lord exclaimed in a voice filled with bewilderment.

However, Yuan ignored the Demon Lord and proceeded to consume the second demon core.

[Heaven Refining Physique Activated]

[??? Qi has been absorbed from the Demon Core]

[You have absorbed enough Qi for a breakthrough]

[You have reached second level Spirit Grandmaster]

[+Stats 26,000]

[You have reached third level Spirit Grandmaster]

[+Stats 27,000]

[Your body has cleansed the impurities from the Demon Core]

'Fuck! It wasn't a fluke that he survived the first demon core?!' The Demon Lord was hoping that Yuan was only lucky enough to survive at first, but after witnessing him consume a second demon core, it concluded that it was not coincidence or luck that Yuan could eat demon cores.

'Is this human really human?! How can a human survive the chaotic spiritual energy within a demon core?! Even a demon would go mad if it consumes a demon core! He's even more dangerous than the Lord in some ways!'

"So this is what being a Spirit Grandmaster feels like, huh? As expected, my body is filled with energy, and it feels like I won't lose no matter what I'm fighting." Yuan mumbled to himself before turning to look at the Demon Lord who was staring at him with its face twisted in disbelief.

"I wonder how your demon core will taste, Demon Lord." Yuan suddenly said to it, causing a chill to go down the Demon Lord's back.

"Try to get my demon core if you can, you damn monster!"

The Demon Lord roared before it rushed at Yuan with the bloody sword in its grasp.

"Oh no! Watch out, young man!"

The grandparents reacted a little slow this time around, mostly because they were still shocked by Yuan's unbelievable appetite, allowing the Demon Lord to slip right through them.

"I'll be okay!" Yuan said to them as he raised the Empyrean Overlord and welcomed the Demon Lord.

Once it was close enough to strike, the Demon Lord swung its blood sword at Yuan.

Boom!

Yuan blocked the attack with his own sword, causing the ground to shake from the impact.

However, unlike previously, he wasn't sent flying.

Furthermore, the blood sword in the Demon Lord's grasp even cracked a little!

The Demon Lord sucked its teeth before quickly repairing the sword with its blood.

"Blood Arms!"

The Demon Lord suddenly grew two arms behind its back.

"Blood Sword!"

Then two swords appeared in those arms.

"Die for me!"

The Demon Lord struck Yuan again, this time with two extra swords.

Yuan immediately used his movement technique to dodge the strikes before activating Heavenly Domain, restricting the Demon Lord's movements to a small extent.

"Four arms? That's not fair!" Yuan exclaimed after dodging its strikes.

"Hmph! You don't get to say such words after what you just did! Are you really human? Damn monster in human skin!" The Demon Lord said to him.

"Young man! Are you okay?!"

The grandparents returned to his side after their quick clash.

"I'm okay, and let me fight the demon alone," Yuan said to them.

"Y-You want to fight it by yourself?" Grandpa Lan looked at him with a dazed face.