Cai's body didn't stop trembling until five minutes later.
When it stopped, Queen Rhiannon faced Lux with a determined look on her face.
"I am willing to accept your condition, but I will also give my conditions as well," Queen Rhiannon stated. "The conditions I'll give you are non-negotiable. If you don't agree to them, then all of us will die."
Lux knew that this was a turning point, so he decided to nod his head and listen to the conditions that Queen Rhiannon was going to add to their agreement.
"I will allow you to drain my strength and help you become a C-Ranker," Queen Rhiannon stated. "In return, you will help me fight against Andras and his Demonic Legions.
"The Second Condition is that, after you finish commanding me to agree to your conditions using my True Name, you and Cai will completely forget about it. What I'm talking about is that this information will be erased from your memory completely, not leaving any trace behind."
Queen Rhiannon paused for a bit before telling Lux her last condition.
"Last but not the least, you will give me one of those white marbles as an insurance," Queen Rhiannon stated. "Just in case Andras succeeds in defeating our forces. I don't want my sisters to fight. Even though they are capable of fighting, I don't want any of them to die.
"Just like me, they have suffered a lot of hardships in the Abyss. If there are people who'll fight this battle, it will just be you and me. If there is really no hope in winning, I will immediately use the White Marble to escape the Abyss, alongside you, Cai, your people, and my sisters.
"Here in the Abyss, only slavery and death awaits the losers. I don't intend to become a slave to anyone ever again. If you are worried that I will wreck havoc in your world, you can add a condition that I'm not allowed to attack any of your people, unless it is for self-defense. That should be enough, right?"
Lux didn't agree right away and consulted with Cai about Queen Rhiannon's proposal.
A minute later, both of them agreed that as long as they were able to clearly state their commands to her while invoking her true name, Queen Rhiannon would not be able to break their agreement.
"Very well," Lux said. "We agree to your conditions."
"Understood." Queen Rhiannon nodded and closed her eyes.
She returned to Cai's Spiritual World so that she could give her true name to Cai. But before doing so, she initiated a Soul Contract that would bind Cai to only adhere to the conditions that they had agreed upon.
If she were to add any other conditions while commanding Queen Rhiannon using her True Name, the High-Priestess' Soul would be destroyed, making her body a soulless husk.
After carefully laying out the conditions in the Soul Contract, Queen Rhiannon took a deep breath before facing Lux with all the willpower she could muster.
"My True Name is Rhiannon Regina Luxuriae," Queen Rhiannon's lips trembled as she cupped Lux's face. "Please, do not betray my trust."
After saying her True Name, Queen Rhiannon kissed Lux before Cai commanded her using the authority she gained after knowing the name of the Succubus Queen that lorded over the 13th Layer of the Abyss.
Lux accepted Queen Rhiannon's kiss and felt something warm and wet dripping to the side of his face.
He didn't need to open his eyes because he already knew that the thing he felt were Queen Rhiannon's tears as she set aside her pride and dignity in order to save her people from the threat that loomed above their heads.
When Cai finished commanding the Succubus Queen to adhere to their agreement, a ripple appeared inside her Spiritual World, which also manifested in the real world.
A moment later, the eye tattoo on Cai's forehead glowed brightly, and the Succubus Queen, who had been trapped inside the High Priestess' once again materialized in the real world.
Cai and Lux, who were still inside the pool, looked at the peerless beauty in a daze as Queen Rhiannon's True Name disappeared from their memories.
The Succubus Queen looked at her hands and clenched them tightly. It was as if she was getting a feel on how much strength she had lost after Lux started draining her strength, allowing him to increase his own.
A minute later, she snapped her finger and instantly teleported Lux to her bedroom.
Before the Half-Elf even knew what was happening, the Peerless beauty was already pinning him down on the bed with a devilish smile on her face.
"We don't have much time, so I'll take over and have you do it with me instead of your fiance," Queen Rhiannon stated. "She's not the only one with the Legacy of the Celestial Maiden. I also have this body constitution."
Without another word, the Succubus Queen held Lux's member and kissed its head before putting it inside her soft and seductive lips.
The Half-Elf's body shuddered as a wave of intense pleasure washed over his body.
Right now, Queen Rhiannon was increasing his sensitivity, magnifying the pleasure that took over his senses.
In just a span of a minute, the Half-Elf's body trembled as he reached his climax.
The pleasure was simply too intense for him to endure, making him release his essence inside Queen's Rhiannon's lips, who had no intention of wasting a single drop of his seed.
The release was so strong and so powerful that it lasted for nearly half a minute, making Lux feel as if Queen Rhiannon had sucked his very soul out of his body.
With a resounding pop, the Succubus Queen released Lux's member and licked her lips in a seductive manner.
"You have to do better than that, boy," Queen Rhiannon said in a domineering tone. "You still have quite some way to go before you become a C-Ranker, so we won't be having any breaks till then. Don't worry about draining my stats because I have a way for the two of us to increase our strength without harming each other's Rank."
The Succubus Queen smiled because Lux's defeated expression tickled her sadistic tendencies.
"You don't have to do anything else except keep this thing standing," Queen Rhiannon stated as she gripped Lux's member. "You can do that, can't you?"
Lux gritted his teeth before nodding his head. He was like a soldier that was about to go to war for the first time and was determined to win no matter what it took.
Soon, the Half-Elf would understand what a Demigod Succubus could do. Not only was Queen Rhiannon proficient in the arts of lovemaking, she also taught Lux many ways on how to pleasure a woman.
Cai didn't just stand idly on the side and joined the two on the bed.
With two ladies having the Legacy of the Celestial Maiden working together to increase his rank, it only took Lux one more hour to finally make his breakthrough.
"That was unbelievable," Lux muttered in exhaustion as his member released its last load inside Queen Rhiannon's body before finally going limp.
The Half-Elf fell unconscious afterwards with a satisfied expression on his face.
Cai laid down beside him and hugged her fiance before also closing her eyes to rest. She had been physically, mentally, emotionally, and spiritually exhausted after everything she had been through.
Lux had shared the stats that he absorbed with Cai, allowing her to once again become a Ranker.
Queen Rhiannon looked at the two sleeping lovers for a few seconds before turning around to leave the room.
Now that she had done her part in increasing Lux's rank into a C-Ranker, it was now time for her to gather her forces in preparation for the war that was about to come.
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