Rise of the Otherworld.

Lin Yu gripped his sword tightly and approached the black hole with difficulty. The powerful suction seemed to pull him into the endless darkness. Every step forward required a huge effort. His clothes rustled in the wind, pulled tightly against his body by the suction. The muscles on his face were tense, and the veins on his forehead bulged, but there was no sign of retreat in his eyes.

"Master, be careful!" the disciples cried anxiously, their voices faint in the chaotic scene. Their faces were filled with worry and fear, but they remained steadfast in their positions, struggling to resist the powerful suction.

Lin Yu gritted his teeth and approached the edge of the black hole step by step. When he finally saw the scene inside the black hole, his heart was shocked. He saw that the black hole was filled with a thick dark aura, which was like a living thing, rolling and surging. He could vaguely see some twisted figures struggling in it, howling in pain, as if they were enduring endless torture.

"What on earth is this?" Lin Yu muttered to himself. There was a hint of doubt and shock in his voice. The scene before him was beyond his imagination.

At this moment, a huge black claw suddenly stretched out from the black hole. The claw was covered with sharp barbs and flashed with a strange light. The claw grabbed Lin Yu at lightning speed, bringing up a gust of wind.

Lin Yu reacted quickly and swung his sword towards the claw. The sword and claw collided, sparks flew, and a sharp metal collision sound was heard. The powerful impact made Lin Yu's arm numb, but he still held the hilt tightly, refusing to let go.

However, the claws were so powerful that Lin Yu was shocked and retreated repeatedly. His feet left two deep marks on the ground and he almost fell.

"Everyone attack together!" Lin Yu shouted loudly. His voice was full of majesty and determination, trying to boost morale.

The disciples unleashed their strongest spells, and for a moment, all sorts of light illuminated the dark room. Flames, ice, and lightning intertwined, forming a powerful force that attacked the claws in the black hole.

But the claw seemed to have strong defenses, and the attacks from everyone didn't cause much damage to it. The magic light struck the claw, only causing a few faint ripples before disappearing without a trace.

Instead, the dark aura within the black hole grew even thicker due to the attacks. Like a massive dark cloud, it quickly spread, enveloping the entire room. An even more powerful suction force erupted, seemingly consuming everything.

"No, hold on!" Lin Yu shouted. His voice was a little hoarse, but still full of strength.

Some of the weaker disciples were gradually unable to resist the suction and began to move towards the black hole. Their faces were pale, and their eyes were filled with despair and fear.

"Help me!" a disciple shouted in terror, waving his hands wildly in the air, trying to grab something to stop himself from being sucked into the black hole.

Lin Yu was extremely anxious. He tried desperately to pull the disciple back, but the suction was too strong. He could only watch the disciple being sucked into the black hole. The disciple's figure instantly disappeared into the darkness, leaving only a desperate scream echoing in the room.

"Damn it!" Lin Yu's eyes were red, and he angrily attacked the black hole again. His swordsmanship became more fierce, and each sword was filled with endless anger and unwillingness.

Can they overcome the crisis in the darkness and save themselves and their companions? Or will they be swallowed by the powerful black hole and disappear forever in this mysterious castle?