Eren stopped before the man of unknown origin who wanted to kill Felona. He also momentarily looked at Felona, who had stabbed him in the back.
It was clear that she had done that to protect him. However, she didn't know the spiritual dagger had been useless to him.
If anything, it had helped him. Even though spiritual paralysis poison wasn't harmful for his body, something within him found it to be extremely useful.
The entire poison was greedily absorbed by the sword mark on his arm, awakening the mark that had been asleep for a long time.
Although the paralysis was not effective on him, it allowed him to see just how much that girl was willing to sacrifice for him. It wasn't loyalty that came from being conquered. Instead, it came straight from the heart.
Her actions also allowed him an opportunity to switch places. As the Holy Emperor, he couldn't reveal other abilities. However, it was different for the Demon Sect's Great Elder.
He could go all out in crushing that man's skull, especially since the Holy Priestess didn't have time to care about these matters.
He raised his hand, casting a Domain around the Palace. Although Ruler of the Ocean was more effective over an ocean, but even on land, it could be used as a Domain, albeit not as effective.
Fortunately, he didn't care about effectiveness at the moment. The entire purpose of the domain was to keep the events hidden.
Inside the domain, he could use his abilities freely without alerting the Holy Priestess. It was as if he had opened his own private space inside someone else's private space.
"You are-" The unknown man tried to talk to Eren, who didn't spare him a second glance.
Now that he had already stepped inside this trap, he was going to make sure that he came out after succeeding in his aim. But before that, he needed to punish the person who dared to lay a hand on Felona.
Only after killing this man could he complete his true aim.
"Dead?" The man didn't understand what Eren meant.
"By dead, I meant... the soon to be dead," Eren let out a tired sigh as he called forth a sword. For the first time, he was able to summon a sword he had never used before.
Even he was surprised when he felt the sword be stimulated when he was attacked by Felona's attack. There was something that had managed to stimulate the sword, allowing him to sense it and connect with it.
He had never realized that the key to awakening the sword was not his devotion or control but poison. He even felt foolish for not linking poison with the sword of the Sword Emperor earlier.
Even though he had established a connection with the sword while supposedly being poisoned, it was still the first time he was going to try calling it out. It was also one of the reasons he had cast a domain.
The mark on his arm started shining. Even through his clothes, a silhouette of a sword mark could be seen shining in his arm.
Slowly, a sword started materializing in his hand, being a shadow of its formed glorious self. It was the same sword that the Sword Emperor in his dream had used to slice through heaven.
However, as Eren called it out, he felt that there was a little difference. Even if the sword answered his call, something was still lacking. He was only able to call forth the sword of the shadow which was much weaker than what he had seen in the dream.
Even if it was just a shadow of the sword, it was still more powerful than any artifact that he had held before. Just holding it in his hand, he was able to feel just how special this sword was.
Around the shadow of the sword, a heavy green aura had gathered. It was the same poisonous aura that he had used with the help of his pendant of poison to kill the Dragon Prince.