1.
Two days had passed since Siwoo regained consciousness.
Given the sudden change of events, it became necessary for Yebin to calmly observe his state before proceeding further with the treatment.
That was why she stayed in the same room as him while observing his actions.
Initially, he just spent his day sitting quietly on the bed.
But, at times, an idea seemed to come into his mind as he'd abruptly stand up, gaze into the air while making various gestures with his hands.
It seemed like he was writing something on the air, but Yebin couldn't understand what he was writing.
She heard from Amelia that he had voluntarily attempted to converse with Amelia, but within her presence, he never uttered a single word.
It was like he was trapped in his own world, as if he was someone with autism.
He barely interacted with his surroundings.
The only times he'd do so would be when he occasionally caught Yebin figures with his eyes.
Typically, he'd just let things pass by without paying much attention, but he'd approach her every three hours.
Out of curiosity toward his behavior, Yebin would remain still, letting him smell her hair or fondle her breasts.
If she were to push him away, he'd quietly retreat as though nothing had happened.
At one point, she started to compare his behavior to that of an NPC back when artificial intelligence wasn't as advanced as the current era.
As time passed by though, one thing was certain; the fact that his movements became more natural.
The intermittent pauses in between his actions had disappeared.
That was why her agenda for today would be determining how far his recovery had progressed and decide how she should start treating him.
'Anyway.'
'If there's no major issues, today will be the last day of his treatment.'
Yebin took a deep breath and put down the chart she had been diligently writing on.
"Mr. Siwoo."
"…"
When she called out his name, Siwoo, who had been staring at the ceiling, turned his gaze towards Yebin.
This was also one of the turning points.
He managed to recognize his own name and turned his head to find out why he was called.
This meant his brain was working properly.
"Please come here."
Thinking that this would be her last time having sex with him made her feel somewhat uneasy.
Despite everything, he was still her first experience, so her feelings were quite normal.
She exposed her breasts to Siwoo.
Since she was going to undress anyway, she didn't bother to wear her underwear.
Seeing her voluptuous breasts sway like ripe fruits in the wind, Siwoo walked towards her with steady steps.
This situation might feel embarrassing for Yebin, but it wasn't like she had any other choice as this was the most natural way to start his treatment.
Back when he was still lying down, she only needed to mount him, but now, she had to stimulate his sexual desires first.
"Ahn…!"
Siwoo walked towards her in confident strides and grabbed her chest without hesitation.
There was no gentleness in his touch, making an intense blush appear in Yebin's face.
She understood it clearly.
This was his touch, a man's touch.
After playing with her breasts for a while, his hand headed towards her nipple.
He slowly twirled them around in circles, hardening her soft nipples.
It seemed like Siwoo was fascinated by the sensation.
"Mmm…"
'After this is over, I'll get my rewards.'
Last night, Amelia talked to Yebin to discuss her rewards.
Fortunately, the conversation proceeded fairly calmly. Despite Amelia feeling both jealous and angry, she didn't take any actions against Yebin.
Anyway, Yebin decided to stay in Gehenna.
Besides the fact that she hated fighting, she also had no reason to stay in the modern world, where dangerous witches might be lurking around.
Also, she didn't want to go back to her old life in Greenland. The gloomy life of her cooping up in her lair and spending her days playing with herself.
"Ahh…ngg…"
Siwoo, who had been playing with her breasts absentmindedly, suddenly placed his hand on her shoulder.
"Y-Yes? Do you need something?"
Then, he pressed her down firmly.
With his weight being pushed down on her, she ended up sitting in an awkward position.
Siwoo had already taken off both his pants and underwear.
When Yebin saw his erect cock standing proudly in front of her, memories of the past came back to her.
They were fascinating, yet bizarre experiences.
After evoking those memories, her body obediently responded to the source of all pleasure, his meat rod.
Although he had only been touching her breasts so far, her whole body felt like it was burning.
'He has such a big thing, good looking face and according to others, good personality. Was it so easy to meet a man like him?'
She thought she had no special feelings for him, but surprisingly, she felt a tinge of regret.
"W-What?!"
But that feeling of regret quickly faded away.
After she was seated down properly, Siwoo placed his hand on her head before pulling it closer toward his crotch.
This startled Yebin. She quickly turned her head, making her cheek accidentally brushed against his erect cock.
Judging by the way he positioned himself, she managed to figure out his intention.
But the feeling of regret quickly faded away.
'Fellatio.'
It was such a common sexual act that she'd feel disappointed if it didn't appear in the porn videos she watched. There was even a dedicated tag for it.
Siwoo was trying to do just that and he was being a bit forceful about it.
'But, could you count this action as instinctual?'
Since he didn't have an ounce of hesitation in his movement, she guessed that he probably had done this before.
"W-Wait for a moment, Mr. Siwoo!"
Siwoo continued to poke her face with his erect cock.
In all honesty, it wouldn't be difficult for Yebin to give him heads.
She had watched plenty of it in porn, she was even curious about how it would feel.
However, the reason why the two of them were engaging in sexual relationship was solely for Siwoo's treatment.
Fellatio might be an essential element in sex, but it wasn't the case when it came to his treatment.
Yebin wanted to focus on the latter.
The boundary between actual sex and the treatment would be blurred if she kept on indulging in Siwoo's advances, besides she'd definitely lose control of herself.
Despite what she was thinking, Siwoo kept on trying to shove his rod into her mouth.
"Um, Mr. Siwoo… You shouldn't poke other people's faces with your penis."
And so, Yebin gently grasped his rod and applied some gel on it.
During this process, Siwoo seemed to be satisfied as he quieted down.
Yebin then stood up from the bed, removed her skirt and leaned over the bed while sticking her buttocks out.
"Why don't you put it here instead of my mouth, Mr. Siwoo?"
She moved her hips back to make it easier for him to put his dick in.
Siwoo quickly approached her and grabbed her hips.
After his hot rod touched her pussy, the penetration process began smoothly.
As expected, during the first penetration, Yebin's body turned a little stiff.
However, she adapted to his erect dick quickly as her body started to tremble.
"Ah…!"
This time, she immediately began to cast her spell.
From now on, Siwoo would eagerly grab her and start thrusting his hips vigorously.
Before her concentration was disrupted, she had to enter his 'Palace of Subconsciousness.'
"Ah…ngg…ahh…!"
As a part of her consciousness opened the doors to the palace, her moans grew louder and louder.
2.
It was a space filled with stairs and doors.
This was Yebin's way to visually organize the information she received from Siwoo.
"Uh…"
As soon as she tried to open the black door, Yebin was met with a completely unexpected sight.
Everything was the same as before up until this point.
Except the fact that the door was tightly locked.
It wasn't just the black door that was like this.
Every door was bound with thick black iron chains.
It was as if they were denying her entry, refusing to share any information with her.
"Is this even possible?"
Yebin reached out and grabbed the iron chains.
Strictly speaking, those iron chains didn't exist physically.
They were merely a visualization of an element whose purpose was to disrupt Yebin's analysis of the information and waves emitted by Siwoo.
She touched the chains, trying to read up its information.
Then she let out a frown.
The information that was originally accessible by simply opening the doors had become randomized.
Useless mana fluctuations were added, creating meaningless value of information.
If this was the case of her misinterpreting the information she received, it wouldn't generate random elements like this.
In other words, this was something that was done intentionally by Siwoo.
It functioned like autonomous defense, responding to any unwanted intrusion into his subconscious.
He locked the doors to prevent Yebin from freely entering his subconsciousness
-Crash!
As soon as it detected her intrusion, the vast world began to collapse.
The stairs crumbled, all the chained doors began to sink into the abyss down below.
Without even a chance to scream, even Yebin was swallowed into the darkness and her consciousness went back to reality.
"Haah…!"
Outside, Siwoo was gripping her pelvis, rendering her unable to escape.
A dizzying sensation struck her.
At this moment, Siwoo was supposed to forcefully thrust his rod into her, but he wasn't doing that at all.
"…"
His cock was still pressed tightly against her cervix, but he only stood silently.
It seemed as if she was observing her reaction,
Under this strange pressure, Yebin hesitated and turned her gaze over her shoulder.
In his left eye, just as she had seen before, a golden aura of mana flowed.
His right eye showed no emotion.
Yet, Yebin couldn't help but feel as if she was being interrogated by him.
'How about it? You can't just come in as you please this time.' It seemed like he was saying those words to her.
"No…way…"
She had one possible explanation.
Previously, she had encountered Siwoo inside his palace of subconsciousness.
But this time, Siwoo had encrypted it in a way that Yebin couldn't decipher.
Considering its complexity, it wasn't something that she could just break through in a short moment.
All this time, he wasn't just staring into space or sitting idly.
He had been preparing and waiting for Yebin's next attempt to intrude on his subconsciousness.
As if confirming her suspicions, Siwoo let out a voice that was devoid of any emotions or hints of triumph.
"So, I won?"
His tone resembled that of a machine.
Yebin felt a shiver run down her spine.
Siwoo had challenged her to a fight and he won it.
If one were to think about it logically, it was an impossible feat.
Even if Amelia was the one who was facing off against her, there was no way that she'd be able to beat Yebin's dominance over her own 'Panacea.'
It was like if a quantum physic started a debate against a surgeon on the topic of risks of surgery, it was obvious who'd emerge victorious.
Self-essence magic possessed unique properties that only its caster could comprehend.
But, looking back, there was a time when Siwoo absorbed her mana, amplified it and returned it.
By that time, he should have already grasped some understanding of her self-essence magic's nature.
He started the battle by doing the most crucial thing, interpreting Yebin's personal mana.
Considering that, she concluded that his feat wasn't something that was entirely impossible.
Now, there was only one thing left for her to ponder.
Was it possible to encrypt such a vast amount of information?
'Can it be done strictly with only a normal human's mental arithmetic?'
To that question, Yebin could provide an immediate answer.
'It's impossible.'
'But he accomplished it?'
'How?'
Yebin could only think of one possibility.
Savant Syndrome.
A syndrome seen in a very small subset of individuals which suffered from either autism or a brain damage.
These individuals could perfectly replicate a picture that was shown to them briefly.
Similarly, they could count and remember the positions of hundreds of dots that were shown in an instant.
In some cases, they could also display genius-level talent in composing music.
They could also produce timeless aesthetically pleasing art pieces with ease.
It was a syndrome that happened to individuals with genius talent in specific fields.
This meant, Siwoo's current status couldn't be classified as 'degeneration in intelligence.'
Like what Yebin had seen inside his Ain, he had discovered his own 'laws' that could overturn the existing magic framework, a monstrous talent if one could say so.
"A-Ahh…!"
As she opened her mouth in utter disbelief.
Siwoo seized her by the nape of her neck.
He pressed her down on the bed, using his weight to assert his dominance and to claim his spoils of victory.
Then, he proceeded to continue the momentary pause in his hips movements, trying to conquer Yebin's body.
-Plap!
"Haa…ahh…"
After receiving such shock, Yebin's mental state became fragile for a moment, making her powerless to resist his advances.
Unable to find a way out of this situation, she became a prey for his sexual desires.
"Heuk…ahhh…!"
At that moment, the intercourse wasn't done for the purpose of Siwoo's treatment,
Yebin ceased to be a surgeon, instead she became a mere loser that was being devoured by the winner.
This situation ignited her perverse nature.
"Aang…aah…!"
On that day, Yebin received his seed four times in the doggy-style position.
Her delicate petals swelled, covered by a mixture of semen and love juices. Her throat became so hoarse that she couldn't even make a sound anymore.
She became Siwoo's personal onahole.
By the time everything was over, her originally pale buttocks were covered in handprints.
And from her steaming-hot clit, creamy white semen dripped down steadily.