Infinity: Kill your way through the movie world.

Sam frowned: "Lucifer and Michael are sealed away, and the Lords of Hell are now under Crowley's command, and they are all of pure mortal blood..."

“The blood of a virgin,” Kevin said. “Or the blood of a saint who has never harmed the innocent.”

The two were silent.

This condition is too harsh.

Just then, the alarm went off.

It was a bracelet on Kevin's wrist that was vibrating and glowing. His expression changed: "The academy's defenses have been triggered. Leviathan is here."

Dean drew his gun, and Sam gripped his machete.

Kevin quickly put away the stone slab and handed it to the two of them. Then he took out a backpack from under the table: "We can't stay here. The academy has an underground passage that leads to the lakeside dock. Follow me."

They had just run to the door when they heard footsteps in the hallway.

Heavy, cumbersome, and numerous.

“It’s too late.” Dean raised his gun and pointed it toward the corridor. “Sam, take him and Slate. I’ll hold them off. Our men are waiting outside.”

"You're all alone—!"

"go!"

Sam gritted his teeth, grabbed Kevin, and rushed toward the other side of the stairs.

Dean remained at the door and saw figures surging towards the end of the corridor. They were dozens of things that could be called 'people' for the time being. They had pale yellow skin, glowing eyes, and corrosive saliva dripping from their mouths.

These people were once students and teachers; now they are merely puppets of Leviathan.

Dean fired without hesitation, knowing that these men had been completely devoured by Leviathan, leaving only their shells.

The borax soap water bullet hit the first one, instantly corroding his face, but the others continued to rush in.

He switched to a machete and went to meet them.

The battle erupted in the narrow corridor. Dean, with his back against the wall to avoid being surrounded, aimed for the neck with every swing of his knife.

Heads rolled off, splattering slime, but more puppets surged forward. They were unafraid of death, devoid of fear, driven only by the instinct to obey orders.

Dean's arm was slashed, blood seeped out, and the wound quickly turned black. These guys' nails were poisonous. He felt dizzy, and it would take time for the angelic power in his body to fight off the poison, but he still gritted his teeth and persevered.

Gunshots rang out from the direction of the stairs; Sam was clearing out the enemies below.

Then, an even louder sound came.

Boom——!

The violent explosion coming from the direction of the academy's main gate shook the entire building, dust fell from the ceiling, and glass windows shattered.

Renault's voice came through the communicator: "Dean, we've arrived. Three squads are launching a feint attack from the front to draw out the main force. You guys should retreat if you have the chance!"

Dean kicked away a puppet that lunged at him and turned to rush towards the stairs.

Downstairs, Sam and Kevin had already stormed the back door.

A modified SUV was parked outside, its engine roaring. A young witcher was in the driver's seat, waving and shouting, "Get in!"

The three of them rushed into the car.

Dean was the last to jump into the car, and just as the door closed, a Leviathan tentacle pierced through the crack and nearly grabbed his leg.

Sam severed the tentacle with a single stroke; the severed limb writhed on the ground like a fish out of water.

The car sped off, crashed through the fence, and onto the street.

In the rearview mirror, the preparatory school was engulfed in flames, and figures moved about in the firelight.

"Is the slate safe?" Dean asked, panting.

Kevin clutched his backpack tightly: "Safety first."

The car drove out of the city and merged into the traffic.

One hour later, at the guild safe house.

The stone slab was placed on the table. Kevin prepared his deciphering tools again, Dean bandaged his wounds, and Sam contacted Wu Heng to report the situation. The communicator rang; it was Wu Heng.

“We’ve got the stone tablet,” Sam said. “The deciphering is complete, but we need a triple bloodline weapon!”

“I know,” Wu Heng interrupted him. “The blood of fallen angels, the blood of demons, the blood of mortals. The guild has Michael’s blood sample in its inventory. It was collected during the sealing. The blood of demons… Crowley is willing to trade. He’s asking for a high price, but it’s negotiable. The blood of mortals… there’s a volunteer.”

Sam froze, "Who?"

“A nun who worked in the slums of Detroit for forty years, never harming anyone, not even killing insects, volunteered to donate blood.”

"Are the investigation results reliable?"

“Her life history is very clear, there are no problems,” Wu Heng said. “I told her that the world needs her blood to save it, and she agreed.”

The person on the other end of the communication breathed a sigh of relief. They hadn't expected that the seemingly difficult data collection problem would be solved so easily. No wonder it was Lor.

"When will the weapons be ready?" Dean asked, leaning closer.

“Twenty-four hours,” Wu Heng said. “But there’s one more thing, Castio… I’ve located him.”

Dean gripped the communicator tightly: "Where is he?"

"The buffer zone between heaven and hell is also known as the 'Soul Shore,' where time flows differently. Three days outside may only be three hours inside. But he is approaching reality and doesn't know where he will end up. He should be waking up soon, but because of the shock and tremor, he may be a little lost."

There are currently three predicted locations.

Dean looked at Sam, then at the stone slab on the table, and then at the still-bleeding wound on his arm.

On one side are brothers waiting to be saved, and on the other side is a threat awaiting its end.

Both sides need him.

Sam noticed his struggle and said, "You go pick up Castio. I'll handle Leviathan with the others."

"But a triple bloodline weapon."

“We’ll use the weapons once they’re ready,” Sam said in a deep voice. “Bobby’s awake, he can command, Reno’s here, David’s here, everyone in the guild is here. This isn’t a battle you’re fighting alone, Dean.”

Dean looked down at the calluses on his hands, at the scars left by years of demon hunting.

He remembered how awkwardly Castio first tried to learn to drink beer, the image of Castio having his wings broken while saving him, and the painful yellow in the angel's eyes during their last meeting.

Then he remembered the empty leather bags floating by the reservoir.

"What will he become?" Dean asked softly. "Having been possessed by Leviathan, can his soul remain intact?"

Through the communicator, Wu Heng's voice was calm yet cruel: "I don't know. He might have amnesia, he might be mentally damaged, he might... no longer be the Castio you know. Saving him is just the beginning, not the end."

Dean closed his eyes.

A few seconds later, he opened his eyes.

"Give me the three coordinates," he said. "I'll go pick him up."

Sam nodded, offering no objection.

He knew this was something Dean had to do, just as he would have made the same choice if Sam had been trapped.

Kevin whispered beside him, “Soul Shallows… I’ve read about it in ancient texts. It’s a dangerous place, with turbulent time flows, fragments of space, and… ancient souls wandering around. You need a guide.”

"Do you have a recommendation?" Dean looked at the guy curiously.

Kevin hesitated for a moment: "I know someone... or rather, an entity, who used to be a recorder in Heaven, but later fell and is now an information broker on Earth. He is familiar with all the spatial paths."

"name?"

“Gabriel,” Kevin said, “but his current name is…Loki.”

"Let's forget about it." Dean took a deep breath.

Another problem.

He stood up, grabbed his car keys, and looked at Sam: "Don't die before I get back." (End of Chapter)