Vali, who had completed his transformation into the "Empireo Juggernaut Overdrive," charged towards the Netherworld King Spirit of Non-Forgetfulness and Litos Azimuth Calamity. The Netherworld King Spirit of Non-Forgetfulness, in turn, raised the dragon head on its right hand and shouted:
"Imperial Thunder Whip!"
A powerful lightning bolt, emanating yellow light from the dragon's mouth, shot out, gradually forming a thunder whip that attacked Vali. Vali dodged while continuing his charge, but the thunder whip's attacks were unpredictable. The Netherworld King Spirit of Non-Forgetfulness swiftly swung the thunder whip, entangling Vali, and then flung him away.
"Twin Dragons Playing with a Pearl!" Then, the Netherworld King Spirit of Non-Forgetfulness raised the dragon head on its left hand, and a strong green storm gathered in its mouth. The storm then erupted, transforming into two wind dragons that attacked Vali.
Roar, roar, roar, roar, roar—!!!
The storm's twin dragons, like hyenas seeing long-awaited prey, continuously gnawed at Vali's White Dragon Armor. To everyone's astonishment, when Vali fell, the Empireo Juggernaut Overdrive directly devolved back into a Juggernaut Drive.
"No way!! Vali was beaten back to his Juggernaut Drive state!!" Monkey King looked at Vali, who had landed, and exclaimed with an open mouth.
"Don't even think about leaving here alive! Giant Rock Prison!" Litos Azimuth Calamity slowly stepped forward and said, slamming his dragon claw on the ground, creating huge waves. Countless rock spikes, like spears, emerged from the ground.
Those rock spikes intersected, forming a prison that trapped everyone, with only their heads and hands exposed. The rest of their bodies were confined within, unable to even extend their arms.
"Damn it!" Vali yelled in anger, using all his strength to break the rock trapping his right hand, freeing his right arm. He then stretched his right hand towards the Netherworld King Spirit of Non-Forgetfulness and Litos Azimuth Calamity.
"Divide!" Vali used the halving ability of Divine Dividing, intending to halve the strength of the two dragons before him. However, to his dismay, the power of the Netherworld King Spirit of Non-Forgetfulness and Litos Azimuth Calamity neither halved nor transferred to Vali.
"What's going on?! Why isn't your power halved?!" Albion, inside the Divine Dividing, looked at his Failure ability and said, dumbfounded.
Litos Azimuth Calamity saw Albion's expression and said with a sinister smile:
"Hahaha~~! Too bad, Albion. Your poison is useless against us, even your poison at its peak. Because the Underworld itself is filled with poisonous hells."
"All of our Guardian Dragons in the Underworld cultivate there. Now, every dragon in the Underworld possesses complete resistance to poison."
The halving ability of Divine Dividing was the infinitely diminishing potent poison that Albion possessed during his lifetime, mixing into the air and entering a creature's body to gradually reduce the strength of the inhaled target.
Albion and Vali secretly thought, "This is bad," because the physique of the Underworld's Guardian Dragons happened to counteract their abilities.
The Netherworld King Spirit of Non-Forgetfulness slowly walked up to Issei Hyoudou, Vali, and Saji and said, "Alright, you three, hand over the dragon souls of Ddraig, Albion, and Vritra within you."
"Why!! Why should we hand over our partners to you!!" Saji shouted at the Netherworld King Spirit of Non-Forgetfulness.
The Netherworld King Spirit of Non-Forgetfulness looked down and explained, "Because judging the dragon souls that come to the Underworld is the job of us Guardian Dragons. We not only guard the various Hells in the Underworld but also guide deceased dragon souls to the Underworld and judge them."
"Moreover, your partners have been dead for many years. As wandering spirits, they should come here to be judged."
"Come on, hand over the dragon souls within you."
After speaking, the dragon heads on the Netherworld King Spirit of Non-Forgetfulness's hands opened their mouths, and a faint blue light emanated from their throats, creating a powerful suction force from their mouths.
The souls of Ddraig, Albion, and Vritra were forcibly sucked out of their hosts' bodies. However, they were still resisting; only half of their soul shapes had been sucked out, but the suction force was continuously strengthening. The three of them would soon be unable to hold on and would be completely sucked out of their hosts' bodies.
Meanwhile, a emerald green orb suddenly appeared in the hands of the trapped Michael and Sirzechs. The two exchanged glances, then threw the orbs in their hands towards Litos Azimuth Calamity and shouted:
"You want dragon souls, do you!! Well, will you take these two dragon souls!!"
The orbs flew towards the Netherworld King Spirit of Non-Forgetfulness due to the powerful suction. As they passed through the souls of Ddraig and the other two dragons, Michael and Sirzechs each condensed light power and magic power into their fingertips. Their fingers formed gun shapes, aiming at the flying orbs and firing energy bullets.
Bang! Bang!
Two shattering sounds rang out as the two orbs shattered, and then two massive figures blocked the Netherworld King Spirit of Non-Forgetfulness and Litos Azimuth Calamity.
"Ah~~! Finally out. That cramped space didn't even let me stretch my muscles," one of the figures said, rubbing its head and stretching its limbs.
"Where is this? I've never seen such a starry sky?" The other figure looked at the red and black starry sky of the Underworld, its face full of confusion.
Issei Hyoudou looked at the two figures and exclaimed in shock: "Grendel!! Ladon!!"
Those two figures were the legendary evil dragons that their DXD team had defeated and sealed: Grendel, the 'Great Sin Tyrant Dragon,' and Ladon, the 'Guardian Dragon of the Treasure Tree.'
Grendel, the 'Great Sin Tyrant Dragon,' is a 15-meter-tall dragon giant with black scales and silver eyes. He loves combat and slaughter. His blood is blue. His scales are arguably the hardest among extinct dragons. His normal punch is more powerful than Sairaorg wearing the Lion's Garment. He was annihilated by the first-generation hero Beowulf, then resurrected by the Khaos Brigade, and fought countless bloody battles with Issei. Even when heavily wounded, he still madly enjoyed combat. After Issei and Sairaorg thoroughly defeated him, he was sealed by Koneko Toujou and then handed over to the angels.
Ladon, the 'Guardian Dragon of the Treasure Tree,' resembles a tree grown into a dragon shape. Where its face should be, there is a large gap, and the red glowing hollows within are its eyes. It excels at barriers and wards. It was killed by the first-generation hero Heracles after he threw the Hydra's venom into its mouth. It was resurrected by the Khaos Brigade and once continuously created multiple layers of barriers to encase Issei in his True Queen Mode, but was later defeated and sealed.
"Hmm?"
"Yo! Isn't that Little Brother Red Dragon Emperor? What's wrong?! Got yourself locked up?! You were so mighty when you beat me before, how come you're so pathetic now?! Hahahahaha!!"
Hearing Issei Hyoudou's voice, the two legendary evil dragons turned their heads to look. Upon discovering that Issei Hyoudou and the others were trapped, Grendel immediately mocked him.
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