Arthur positioned himself, rubbing his penis against Lilith's entrance.
"Fufu~ Put it all the way in."
She wrapped her arms around his neck so she could get closer to his ear and whisper like a demon.
Arthur hesitated for a second.
"See how wet it is? I'm like this because of you~ I'm ready."
She spoke to him again, but this time she also bit his ear and flicked her tongue into his ear canal.
All the boy's doubts and worries vanished. If she herself said it was okay, who was he to contradict her?
With a single thrust, he completely inserted his penis into Lilith's body. There were no obstacles or blood; the sensation was infinitely better than that of her mouth.
It was so tight that it was difficult for him to move, and he felt as if hundreds of tiny tongues were licking his shaft. His tip reached the entrance of the girl's uterus, hitting many sensitive points along the way.
*PAK!*
"Mmm~"
Lilith's mask of confidence began to crumble. Despite being a demon of lust, she had only been born for Arthur, and she had been created recently, so this was her first time. She knew a lot about sex instinctively, but experiencing it firsthand was a completely different matter.
*PAK!*
"Wait..."
*PAK!*
*PAK!*
She wanted to tell Arthur to give her some time to get used to it, but he ignored her and began to move his hips fiercely.
Lilith could no longer think because of the immense pleasure she felt. Her eyes met the man above her, and she lunged for his lips.
*PAK!*
*PAK!*
"Ahn~ harder..."
Moans began to escape Lilith's mouth, and Arthur didn't hesitate to fulfill her request.
*PAK!*
*PAK!*
"Nghm~ Arthur... harder~ shatter me~"
Until now, Arthur had hesitated to use more force with her because he was a little afraid of hurting her, but after hearing her words, he increased the speed and force of his thrusts. "Ahaah~"
Suddenly, a loud moan escaped Lilith, her outstretched legs contracted, wrapping around his waist, and her vagina tightened even more, a liquid gushing from her lower body.
The girl's expression was very different from her previous flirtatious face; her eyes seemed lost, and her tongue hung out of her mouth, dripping saliva.
*PAK!*
*PAK!*
*PAK!*
Arthur felt the urge to continue provoking that expression in her, so he grabbed her by the hips to thrust harder.
She could only moan loudly each time he hit her sensitive spots. After a while, Arthur felt he was close.
*PAK!*
"Mmm~ Finish inside me~ Fill me with your seed~"
Lilith also felt that he was about to finish, so she told him where to do it.
*PAK!*
*PAK!*
"Okay... Here I go."
Arthur knew she wasn't human, so he trusted that nothing would happen if he did.
His thrusts became faster until he finally released his third shot directly into the girl's uterus.
*PAK!*
*PAK!*
"Nghm~ ahaah~"
"Uhg"
*SPURT!*SPURT!*SPURT!*
*SPURT!*SPURT!*SPURT!*
Lilith cried out in pleasure as she herself finished. This time her whole body shook with spasms, tears streamed from her eyes while her tongue hung extended out of her mouth.
At the same time, two bright marks lit up: a pink heart-shaped one on her lower abdomen and another red one formed with runes on her neck.
[Lilith has forced the use of "Master-Servant Contract (System Version)" with you; she has voluntarily submitted to the role of "servant."]
Arthur instantly understood what had happened, but instead of asking questions, he simply turned Lilith over to put her face down and lifted her buttocks.
She willingly got on all fours on the bed before starting to shake her butt.
"Let's play until you're satisfied~"
Arthur smiled and slapped the girl's buttocks, also holding her tail and gently stroking it. "Mmm~ no... My tail~"
He slapped her butt again with a little more force.
*PAK!*
"Ah~ yes... Spank me~"
She started moving her hips faster, the friction between them producing a rhythmic slapping sound.
*PAK!*
Arthur used his free hand to caress Lilith's breasts, also playing with her nipples, rubbing and pinching them. Each time he did, her insides tightened and more fluid dripped between her legs. He also pulled her closer so he could lick her neck and back. An unknown feeling arose from the depths of his heart, an uncontrollable desire to mark Lilith as his own, so he also bit her neck and breasts lightly.
Lilith didn't say anything but enjoyed the feeling of being marked.
Finally, Lilith had a second orgasm, but it didn't stop there. They both lost count after a few hours, but they continued playing together until Lilith fainted.
Arthur accomplished the feat of defeating a succubus in bed thanks to the almost infinite vitality granted by his dragon heart.
After satisfying his desires for the first time in this body, he felt renewed.
Lilith lay in bed sleeping with a bright smile on her face, wearing torn stockings and a single glove. She was completely covered in a mixture of sweat and other fluids, and a stream of a thick white substance flowed from between her legs. Arthur proudly admired his handiwork before using a blanket to cover his woman's body.
Arthur stared at Lilith's beautiful face as she slept, her breathing slow and steady, her expression peaceful in a way that felt strangely intimate. Despite the fact that they had only just met, a deep sense of connection lingered in his chest, heavy and undeniable.
It was irrational. He knew that.
And yet, the possessive feeling he had experienced earlier had not faded in the slightest. If anything, it had settled into something calmer, more dangerous, like a quiet certainty.
[It seems you're finished, Host.]
Arthur didn't bother to hide his suspicion.
"Were you watching?"
[Absolutely not. This system prides itself on respecting its host's privacy.]
He snorted softly.
"Sure you do. Did you delay the reward delivery just to give me… space?"
[That is correct. Since the host has now concluded all personal matters, this system will proceed.]
Arthur glanced at Lilith again. She shifted slightly in her sleep, instinctively moving closer, as if even unconscious she refused to be far from him.
"Thanks for that."
Ding!
[Congratulations, Host.]
[You have completed the second floor of the weekly training dungeon.]
[You have obtained 15,000 system points.]
[You have obtained "Healthy Body (+)".]
Arthur leaned back, reading the description carefully.
=====
Healthy Body (+)
Upgraded version of: Healthy Body
Ensures the body is always in its optimal state.
Prevents aging, disease, physical degeneration, and conditions that inhibit peak performance.
Actively induces beneficial biological adaptations to support the user.
=====
"…That's ridiculous."
He wasn't complaining.
Arthur recognized the origin of the ability immediately. Even though he had only read part of that novel in his previous life, he understood just how absurdly powerful this skill truly was. This was not a passive convenience; it was a foundational ability that would continuously refine him from the inside out.
"Between this, the Dragon Heart, and the Renewal Style… my growth curve is completely broken."
Ding!
["Multi-Source Dragon Heart (Incomplete)" is resonating with "Healthy Body (+)".]
[A restoration process has begun.]
Arthur felt warmth spread through his chest, subtle but deep, like a second heartbeat syncing more perfectly with the first. Fatigue he didn't even realize he was carrying vanished almost instantly.
Then—
Ding!
[Congratulations, Host.]
[Your Embryo has hatched.]
[You may now access its status freely.]
Arthur's gaze shifted back to the woman resting beside him.
"…So that's what you are."
Ding!
[Due to your contract with "Lilith", you have obtained "Charm Immunity" and "Charm".]
He exhaled slowly.
"That explains a lot."
"Show status."
=====
Name: Lilith
Title: Primordial Demon of Lust | Mother of All Demons
Species: Succubus
Embryo Type: Maiden-Type with Guardian Attributes
Physical Aptitude: Equivalent to a mid-level demon
Abilities:
• Resonance
• Charm
• Succubus Magic
• Master-Servant Contract (System Version)
Equipment: Queen of Lust's Dress
Loyalty: MAX (Impossible to Decrease)
=====
Arthur stared at the loyalty line for a long moment.
"…That's absolute."
This wasn't affection or obedience. It was something far deeper. A metaphysical bond enforced at the level of existence itself.
"Show Resonance."
=====
Resonance
Allows the Embryo to partially copy the master's status, attributes, and growth trends.
Restrictions apply based on compatibility, mastery, and synchronization.
As the bond deepens, copied attributes become more refined and permanent.
=====
Arthur finally understood why the system had classified Lilith as a Guardian-type Embryo.
"You're not just support," he murmured. "You're meant to grow with me."
As if responding to his voice, Lilith stirred. Her eyes fluttered open, still hazy with sleep, but the moment they focused on him, a gentle smile formed on her lips.
"You're awake," she said softly.
Arthur nodded.
"Yeah. Looks like we both came out of this stronger."
Lilith reached out, resting her hand over his chest, directly above where his Dragon Heart beat beneath the surface.
"Of course," she replied, her voice calm and assured. "Your strength is my strength. Your survival is my purpose."
Arthur didn't look away.
"…Then let's make sure we keep surviving."
Outside the rest area, deeper floors of the dungeon waited. Stronger enemies. Deadlier trials.
And now, he would face them not alone, but with a being born from his will, bound to his existence, and destined to evolve alongside him.
The training had only just begun.