Roan was right. Although it was hard to accompany the movement of those experts with his cultivation, he could at least tell after the first exchanges that Frin and Duran were already at their wits' end. And that was considering they might have weakened the enemy with the destruction of the crimson spheres.
Roan then jumped on Kentucky's back while Rean activated his Light bending skill. In the next second, they disappeared from everyone's vision. The red-eyed being didn't care since some Nascent Soul Realm ants posed no risk for him. Now that they've stopped his recovery, he had enough time to stay outside to hunt them down later.
Rean, obviously, asked soon after they began to fly in the direction Roan indicated, "And how exactly can we help them?"
Roan pointed behind where the creature was fighting. "Although you guys can't see it, I can. His power is not coming from his body alone. He's being fed by something to keep his body stabilized. That capsule or whatever was holding him seems to have the same purpose other than healing him.."
Rean and Kentucky were taken aback, asking, "Is it the Underworld Energy?"
Roan nodded, responding, "Yes. From the looks of it, the energy is coming from that building with the core that Red talked about. I don't know if it's possible, but I believe he found some way of using that core to contain his own Underworld Energy if he needed it later. We know he has been here for a huge amount of time as well. That being said, I doubt it'll run out anytime soon. Duran and Frin will be dead way before that."
Rean and Kentucky nodded in response, with Rean asking soon after, "So you want to destroy the core, is correct?"
"Yes," Roan confirmed. "That's the only method I can think of. Besides, we have limited time. If that guy isn't an idiot, he definitely called his Stage Nine Demon Beasts back. The only question is how long they'll take to arrive from the closest crimson spheres."
Rean narrowed his eyes in response as he could not help but say, "But that core is probably linked to the World Beast Formation. If we destroy it, the mission will fail."
Roan didn't seem to care. "The mission didn't give a death penalty this time, so fuck it. I would rather guarantee my survival."
Rean didn't say anything else anymore as Kentucky flew back to the building Roan was opening the way to. Because he was already in the middle of the process when Rean found the creature, he was able to continue from where he stopped. It's just that he didn't care about being careful this time and blasted the Underworld Energy with his own Dark Element.
The process only lasted a few seconds since all the power was focused on a small hole big enough for Rean and Roan to pass through. Kentucky, obviously, wouldn't be able to follow them inside due to his size. "Stay out here and warn us if you see any demon beasts coming. However, if you recognize that you need to leave, don't worry about us. We can manage."
"On it!"
Kentucky quickly activated Rean's Light bending skill and made it so that the hole couldn't be seen at all. Soon after, Rean and Roan rushed inside.
"This is quite impressive..." Rean immediately noticed many formations stacked on top of each other, forming a synergistic connection. There were many, many runes that he had never seen before. Not only that, quite a few of them didn't seem like something a Heaven-level Formation Master could do. Perhaps even the realm above Heaven-level would struggle to replicate it.
"Stop admiring and help me find the core."
[I know where it is. Now that we're inside, I can feel it even more clearly. This building has five more levels below it, and the core is in the very last one.]
Roan nodded. "That matches my perception of Underworld Energy as well. Down we go." Roan didn't care if it would damage anything or not. Only the shell of the building was being protected by the red-eyed being's Underworld Energy, so the ground wasn't as hard to break as it looked in Frin and Duran's hands.
*Bang!*
Rean felt some pity as he could see a few runes breaking apart. Still, he followed suit and did the same thing. After all, they didn't have the time to look for the stairs down since they didn't even know if they existed. A moment later, the ground was wide open as the twins jumped inside.
The battle outside was reaching its climax as well. Frin and Duran joined together to fend off the creature. Thanks to the battles against the demon beasts at the crimson spheres, they were able to form a good level of cooperation. Nonetheless, Gulan and Red, who were watching from far away, could tell that those two were suffering quite a lot. "What to do? What to do? Rean, Roan, and Kentucky also disappeared all of a sudden."
Gulan, however, didn't seem to be afraid. Instead, he looked at the battle with a dark expression, saying, "Keep waiting. If there's a chance for us to help, we can only give it a shot." Obviously, seeing the target of his revenge in front of him wouldn't make him feel good.
Red could only nod as he kept his concealment skill activated.
*Creeee!*
Suddenly, they heard the sound of demon beasts in the distance. As Gulan and Red turned their heads, the shadows of a few flying demon beasts appeared near Duran and Frin's battlefield as fast as they could. "Sure enough, the flying ones are the first to arrive," Gulan said with a snort. After that, he left the range of Red's concealment skill and rushed towards those demon beasts.
Red was taken aback since Gulan was only a stage Six Blue Luan. Even if he goes all out, he would at most match an ordinary Stage Seven Demon Beast. "This crazy bird."
Red said he wouldn't save Gulan's ass, but he still jumped on his back as Gulan charged to stop the demon beasts. Naturally, Gulan was surprised. "Why are you coming with me?"
"Shut up! I'm not helping you. I'm only preventing them from reaching both Senior Duran and Frin. If those two die, then we'll die as well."