O'Brien Volcano, a terrifying place that makes everyone on the continent daunted and discolored. Today, it is like the arrival of the demon king, the black clouds cover the sun, and the thunder and lightning hidden in the black clouds are clearly visible in the rolling black clouds. At this time, the crater was full of smoke, as if it was about to erupt at any time, and the ground roared like an apocalyptic earthquake, and the mountains and forests collapsed.

Deep in the volcanic underground, in a massive fault cavern, this place is now littered with the devastation of battle. Roaring flames, shattered weapons, and mutilated corpses strewn around the ground. Everywhere on the ground, you can see greedy gold and silver treasures, some of which are stained with blood, some of which are mixed with the hot lava and make a "clang" sound with the stream of blood, and then evaporated into a red mist by the high temperature that fills the underground space. Deeper down the Fault, hot lava rolls and flows underneath.

And in the depths of the underground space, there was a roar and light mixed with various sounds. In a huge cavern where you can't see the whole picture at a glance, a huge dragon covered in black scale armor vents its dissatisfaction with these invaders in this vast underground world, its hard claws are full of severed limbs, the hurricane brought by the huge dragon tail like iron and steel, the people fly through the land where the hurricane of the huge dragon tail like iron and steel casts, and the huge dragon wings like dark clouds fly sand and rocks, and the frenzied rage accompanied by the scorching dragon breath erupts from the dragon's huge mouth, and there is no survival in the place where it passes. A long roar echoed through the cavern, spurring humanity that dared to challenge its authority.

At this time, the most elite adventurers on the continent seemed so small at its feet, the outermost mages muttered muttering spells, unleashing dazzling magic, accompanied by the deafening roar of the demon dragon, their faces turned pale; the archers were wandering around to avoid the lava that could rise on the ground at any time and the dragon's tail and dragon wings that could come down at any time, finding the gap and shooting arrows at the weak parts of the dragon's defenses as accurately as possible, but each time it was like tender grass hitting a stone; the assassins hid around the dragon's body, ready to make up for it at any time to make up for a deadly assassination, no one knew if the next swing of the weapon would be the last; brave warriors scattered their positions, raising his shield to dodge and block the dragon's indestructible claws and overwhelming wing blows, distracting the dragon's attention, and the priest running back and forth between the mage and the archer to heal the injuries of the mage or archer who was swept alive by the tail, or to inflict blessings and healings on warriors and swordsmen. The air was filled with fluctuations of magical energy, scorching magma, mist-dissolving blood, and arrows bounced off by hard shells. As the adventurers continued to suffer casualties, this image was repeated throughout the day. A sense of powerlessness spreads among the adventurers, the mages cast spells and chant spells with increasing difficulty, the arms of the shooters have long been paralyzed by the mechanical movements, and the bodies of the warriors are no longer perceptible in the face of the dragon's heat and blows.

"Tiny ants, dare to offend my majesty again and again. I'm going to crush you ants today!" a stealthy assassin was unable to dodge and was trampled into blood by a dragon.

"O'Brien, you heinous dragon, you will atone for the crimes you have committed for thousands of years!" a tall human blocked the dragon's claws with a golden warhammer, and then took advantage of the opportunity to speak and secretly shook his numb arm.

"Crime?hahaha, do you feel guilty about killing ants, do you feel guilty about stepping on the anthill, ridiculous! You are small ants in my eyes, ants who let me enjoy as much as I want!" The mages were interrupted by the deafening laughter of the demon dragon, and some of the exhausted mages fainted with blood in the roaring laughter of the demon dragon, and those who could still stand were all pale and bitterly supported.

"We need to break through his defenses and give him a fatal blow!" Cover me!" roared a black figure as it roamed around, keeping an eye on the vital parts that had been protected by the dragon.

"Ken! We must cooperate now, let go of our prejudices and work together to have a chance! Otherwise, I'm sorry for those brothers who have died for us, and we will also fall here!"

The human, armed with a golden warhammer, watched his companions fall one by one, turned his head and shouted at a taller figure standing a little farther away.

The expression of the North Korean Ken Mu Ne, who was very cautious, immediately nodded.

With a whistling, the mage began to cast levitation spells on his companions, and the priest applied light spells to the others. The figure called Ken immediately squatted hard, and the earthy yellow light around his body began to petrify, and the figure gradually became bigger and bigger as the light became stronger. The dragon's attention was completely drawn, and it sensed that changes on this side might threaten it.

"O'Brien, pay the price for your evil deeds today! you will be defeated by the humans you despise!" the man raised his golden hammer, and the image of the lion emblem on the hammer began to tremble. The phantom of a golden lion condensed at the top of the warhammer, its size getting bigger and bigger, and the phantom becoming more and more real. In a moment, a golden lion like a hill appeared majestically in mid-air, the lion raised his head and opened his huge mouth to the demon dragon O'Brien and issued a powerful roar, ".............roar" accompanied by a roar, the demon dragon O'Brien was in a trance, and his body involuntarily appeared in a short state of loss of control, and the originally exhausted adventurers were refreshed after the golden lion roared, and they felt regained their energy and regained their confidence.

"Quick, it's now!" Ken, the stone man who had become as huge as the thighs of a demon dragon, instantly jumped to the side of the demon dragon and slammed the ground violently. "Boom," the whole cave felt like it couldn't bear this turmoil, it trembled like the strongest earthquake, and the rocks as big as a house on the top of the cave fell into this cave like hail, falling on the demon dragon, and falling into the crowd of adventurers, fortunately the levitation technique and light body technique were released in advance, and the adventurers were able to flexibly avoid these rocks, otherwise the adventurers in the entire cave were estimated to have survived.

The demon dragon, who was about to recover from the roar of the lion, suddenly felt that his body had become extremely heavy, and at the same time, his limbs were unstable. Then the stone man bent his knees again, slamming all the force he had accumulated from slapping the ground into the dragon's belly.

"Boom! click!" With a cracking sound, the defensive magic set by the dragon in the abdomen shattered. Before the demon dragon could stabilize its body, it was almost unbalanced by the impact, and at this moment, the small white scale under the abdomen, which had been protected by wings and front grasping, was exposed.

"Whoosh" almost at the moment when the reverse scales were exposed, a black figure like lightning from the perspective of the demon dragon behind the side and back of the eye lightning thundered straight to the abdomen, the speed of the air friction and burn, the fiery red afterimage in the air for a long time.

At this moment, everyone's eyes were fixed on this afterimage, which could pull out red and white scorching black lightning in the air, and looking at this black lightning that was related to everyone's life and death, their breathing almost stopped.

"Bang!boom!" the two voices came out at the same time. The black figure was violently bounced out by the force of the explosion, and the explosion was filled with thick smoke.

"Whoa..........." The demon dragon's painful groans and the concussion of its body falling to the ground resounded throughout the underground space.

"Success!" Black Lightning never disappointed, everyone looked at the dragon's belly with hopeful eyes, and some raised their hands to celebrate their immortality.