Eren also knew that her abilities weren't something that he needed. Although they could be useful in certain situations, they mainly overlapped what Yelen could already achieve.
Moreover, he didn't have time to strengthen her ability. Unlike other abilities that could strengthen on their own the more one used them, Ghost Queen's ability was different. It needed a lot of work to be put in.
Moreover, it was also true that Mist was a bigger threat for now. Even though Eldric was there to keep her busy now, the more cards there were, the better.
In any case, Ghost Queen couldn't defeat Mist even if she tried. It was at best a minor annoyance for Mist.
For him, Ghost Queen was more useful alive than she was dead. Until now, it was Mist sending people undercover to destabilize other places. Ghost Queen gave Eren an opportunity to do the same.
Despite agreeing with the Ghost Queen, Eren couldn't outright agree with her.
"You are too weak and insignificant for me to work with you," Eren told her, making her expressions grow even colder.
Ghost Queen's lips twitched, as she was disrespected. Still, she didn't attack Eren this time. The person in front of her was someone who could even go against Mist.
He was someone that needed all four Overlords to work together to take him out. The rumors about Devourer had already made him appear like a legend for many people. And now this legend was standing before her.
Even though she was slightly suspicious if he was actually as strong as the rumors suggested, she didn't want to test it.
Even if she did alert the Academy about his presence and they caught him, wasn't she just going to help Mist? Instead, it was better to have him on her side.
"I know I am not strong enough, I am soon going to have a slave that will add to my strength. With him around, I'm sure you will find me a lot more useful."
Although the experiment to bring Aster back to life was a secret, Eren was already here. She couldn't hide it anymore. If it could help her in negotiations, it was all for the better.
His fingers gently caressed her cheeks. "I just want you to serve me for an eternity. In exchange, I will make your wildest dreams come true."
"You also have another option if you don't like the first option," he continued while his fingers ended up under the woman's chin.
He raised her chin, looking deep in her eyes. "The other choice is simpler and less time consuming. I will just kill you here."
He brought his lips closer to the Ghost Queen's ears and whispered, "Although it would be a pity to kill a woman whose lips were so delicious, I would leave this choice to you."
"Y-you!" The Ghost Queen didn't know how to react. Although he sugarcoated his words, the gist was simple. She could either become his slave or die right here.
She tried to speak further, only for Eren to place his finger on her lips. "Shhh... The time for you speaking is long over. Just nod if you agree to the first option. Shake your head if you agree to the second."
As he spoke, a little trickle of his Sword Emperor's Aura released, sending a chill down the spine of the Ghost Queen.
The Ghost Queen felt like she was looking at death in the eyes. At that moment, her mind was quite distraught. If she was still calm like before, she might have noticed many flaws in his words but in this moment she couldn't
Unable to think straight, she nodded her head repeatedly. Anything was better than dying here.
Moreover, if Eren actually kept his promise then she could get the Southern Continent for herself. Wasn't it actually what she wanted?
Eren smiled as he saw her reaction.
"Good girl. Now don't resist."
From her lips, his fingers gently slid down until they landed on her slender neck.