The Hero Became The Son of The Demon Queen

"I was planning to extract it with my breasts, but I ended up using my mouth."

The Demon Queen made a displeased expression. He chuckled at her cute appearance.
"So, my son. Are you feeling a little better?"
"Huh?"
"I don't know about your insides, but your expression has somewhat relaxed."
"Ah."
It seemed his face hadn't been very pleasant. No, even if it had been the same as usual, she probably would have noticed.
When he had his first awakening and was able to speak, he asked the Demon Queen why she had gone to such lengths to revive him.
"Because I, no, this mother, fell in love with you, my son. You may have seen me for the first time in this castle, but I have been watching over you for a long time."
At first, he thought she was joking, but gradually he couldn't help but be convinced.
That's how much the Demon Queen cherished him.
She had spent 18 years with him, caring for the man she loved. He even thought that she might know more about him than he did. Unless he deliberately hid it, it seemed like he couldn't hide anything from her.
Hesitating for a moment, he soon slowly opened his mouth.
"I had a dream."
"A dream?"
"Yes, a dream about the day I was betrayed."
Only then did she understand his expression.
His original purpose was revenge.
But as a price for his survival, he became a baby, and after several awakenings, he had been waiting for a long time. Because of this, she still sometimes trembled with anxiety that he might suddenly leave the Demon Lord's castle. Perhaps this thought made her even more devoted.
Although not as much as the Demon Queen, he also knew a lot about her.
Sensing her anxiety, he smiled and stroked the Demon Queen's head.
"Don't worry. I still want revenge, but now I'm the Demon Queen's son. I won't suddenly leave on my own."
"…That's a relief."
The Demon Queen was relieved.
"But it's time to start moving."
However, that was only for a moment, and her eyes narrowed at his following words.
"Moving?"
"Didn't you say? You said that after 2 years, when I become an adult, you will make me the Demon Queen and try to invade the continent again."
"…That's what I said."
Actually, those words were spoken to prevent him from leaving alone, burning with a desire for revenge.
In the past, she had called for the conquest of the continent out of ambition and a sense of duty as the Demon Queen, but now she was just a woman in love. She valued him, her son and lover, more than the continent.
The problem wasn't just that.
More than the anti-demon alliance on the continent, the demons were unable to recover from the damage of the war. This wasn't just because they had lost.
Demons had long lifespans, but the time it took for them to become adults varied depending on their strength. The greater the power they possessed, the shorter the period before awakening. The average time to become an adult was 50 years. In other words, they were also short on human resources that could become combat power.
"I never fight a losing battle. Whether it's a personal battle or a war."
"Hmm."
"To do that, I need strength, but also preparation. I'm going to destroy the continent from the inside."
"What you're saying now…?"
The Demon Queen's eyes widened.
"Yes, I'm going to infiltrate the continent."
"That's too dangerous."
18 years had passed since the war ended, but anti-demon sentiment was still rife among humans. He, who had been reincarnated, was like a demon hybrid. The characteristics of demons could not be hidden even with magic.
That's why the Demon Lord's army had never been able to send a proper spy to the continent.
"It's okay. I've been preparing for this for several years. The dream I had today was just a trigger."
"…Is that so…?"
She had wondered what he was up to with his subordinates from time to time, but she hadn't expected him to be preparing to sneak into the continent.
He told her what he had thought about and prepared.
The Demon Queen listened silently, her eyes widening as the story progressed.
There were many uncertain parts, and some were close to gambles. Still, if it succeeded, it was a plan that could definitely reduce a significant portion of the continent's power.
In reality, there were some unreasonable points, but the Demon Queen, already blinded by love, had infinite trust in him.
'Thorough investigation and analysis. And a plan that utilizes his own abilities and personality. It would probably be impossible to even attempt it if it weren't for my son.'
The Demon Queen was once again struck by how amazing he was.
From strength to brains, skills, and personality, he lacked nothing.
He was indeed the man she had fallen in love with.
"Then do as you please, my son. But if it seems dangerous, come back right away. …And send me frequent updates, as this mother will be lonely too."
"Okay. I'm going to take a few subordinates with me anyway."
"That's a relief. So when are you leaving?"
"Tomorrow."
In fact, all the preparations were complete. The plan also had several contingencies in place to adapt to the situation.
All he needed was a reason to leave the Demon Lord's castle.
And today, as if pushing him on his back, he had a dream of the past.
It was more than enough to rekindle his desire for revenge.
"Then today… I won't be able to put you to sleep."
The Demon Queen's expression returned to that of a female.
A little while ago, it was more about satisfying her sexual desire than comforting her lover's mood.
But this time, it was purely filled with her lust.
It was the same for him.
"Haum, absorb, slurp, kiss…"
He quickly grabbed the back of her neck and pulled her in for a kiss.
He might be inferior to adults in terms of stamina, but in terms of sexual desire, he could be said to be ahead. It was impossible for his lust to subside just because he had ejaculated twice.
"Suck… Puha, is it okay even though I just came in your mouth?"
"You know, why ask? Of course I used magic."
No matter how much he loved his lover's mouth, as a man, it was inevitable that he would feel uncomfortable if he had just ejaculated semen inside it.
So he used simple magic to clean her mouth and kissed her.
"Huh, your magic skills have definitely improved a lot."
"It's more fun to learn it properly after secretly learning it."
He had learned it during his time as a hero, but he hadn't been able to learn it properly because he had started magic so late. Moreover, he had to be wary of the surrounding party members, and it was difficult to learn everything evenly in the middle of a war.
His swordsmanship was already among the best on the continent.
That's why he chose magic as a means to become even stronger.
The world of magic was deeper and more diverse than swordsmanship. There were hundreds of types of magic, and various magic techniques belonging to each magic category. For him, who had only learned three types of magic, the study of magic, which he could delve into endlessly, was very fascinating.
"Fluid magic must have been difficult."
"If I can't even do this, how can I become the next Demon King?"
The Demon Queen chuckled at his sly answer.
"Haha, that's reliable."
"More than that, isn't that what's important right now?"
He lowered his head slightly and bit the Demon Queen's nape.
"Haah♡"
She let out a cute moan in surprise.
He licked and sucked on the Demon Queen's ears and nape, clinging to her stickily. Due to his small stature compared to hers, he looked like a child acting spoiled at first glance, but his actions were clearly seductive courtship behaviors to arouse the female.
Making sucking noises on her body, his hand reached down to touch her panties. The black underwear, which felt luxurious just by the touch, was damp.
The reason was obvious.
It was the Demon Queen's love juice that she was excitedly leaking.
Even now, her genitals were constantly pouring out love juice.
"Haa, haung, Ughut."
He put his hand inside her panties. Parting the neatly trimmed bush, he touched her clitoris, which had become extremely sensitive.
"Ugh…♥"
The Demon Queen trembled with pleasure, feeling his caress with her whole body.
The hand wrapped around her back, the tongue that had somehow reached down to her chest and was now sucking on her nipples. Every single one of his gestures was a great stimulus to her.
Skillful hand movements.
He knew her body too well. It couldn't be helped. He was the one who had developed her body, which had lived as the Demon Queen for over 100 years, into that of a female.
"Haa, haeut."
Heated breaths were exhaled.
The fingers that had been persistently touching only her clitoris dug into her vagina.
"Higuk!"
She came lightly, feeling the electrical signals running up her spine.
Twitching.
"Haa, hau…"
The Demon Queen buried her head in the shoulder of the boy smaller than her and wriggled her body.
"Son, my son… That was more persistent than usual, haa."
"The bad son is angry because he got scolded?"
"Ugh."
She wasn't someone who wouldn't understand what he was saying. He was referring to what she had said during their pie play.
"If my son wants that kind of play, it's not like I can't do it, but right now, I want to do it as your lover, not your mother."
"Huh?"
So she was going to play it like this.
Saying it as if it was what he wanted, it felt cute and also a bit cheeky.
"Where do you think you're trying to pull a fast one… You need to be punished."
"Ugh, shut up!"
The Demon Queen, who truly wanted lover's sex rather than changing the subject, kissed his mouth. Her tongue, with its rich flavor, dug into his mouth.
The taste of loneliness came from her lips. It was a kiss to remember the lips of her lover whom she wouldn't see for a while and to impregnate her body with his scent.
Realizing this, he silently followed the Demon Queen's lead.
She quickly took off his shirt and her panties with both hands. The two, who were instantly naked, embraced each other just like that. The heat emanating from each of them mixed together, urging them on.
"Ah, haa."
"Aren't you too excited?"
"How can I hold back when my son is so sexy?"
The Demon Queen's answer, with her breathing so heated that it seemed like she might hyperventilate. He laughed at her words, which he felt he should have said instead.
"Don't laugh, my son."
"Ah, I'm really sorry."
Even if he tried to be serious, he couldn't help but laugh at the Demon Queen's lovely appearance. He even thought that maybe he had become a hero to meet the Demon Queen.
These were happy days that couldn't even be compared to his time as a human.
"Meeting you seems to be my greatest fortune."
"It's not 'seems,' it is fortune. …And it's the same for me."
The two people, embracing each other's bodies and facing each other, smiled without anyone saying anything first.
And they kissed. At first, it was an innocent kiss, just touching and rubbing their lips together. Gradually, the two of them bit and sucked on each other's lips as if they were going to devour them.
It didn't take long for the man and woman to become a pair of beasts, sharing a passionate kiss.
"Uum…, suck, haeut, whoop…, chuuup…♥"
As if they were competing to see how long they could last with just their lips, the two of them wouldn't let go of each other's lips. And the loser of that match was the Demon Queen.
With her eyes half-open, the Demon Queen pushed her son down onto the bed with all her might and climbed on top of him.
"Oof!"
"Haa, haa, …haeut♥"
A single penis stuck tightly to her stomach. She pressed her stomach against the hot pillar as if she were going to get burned.
"It's hot. …Haa."
The Demon Queen slightly raised her body and rubbed the tip of his penis against her navel.
"Eung…, huu, …haa."
It was a strange feeling. Due to the size of his penis, it didn't go all the way in, but the sensation of the tip pressing against her stomach was indescribable. Every time it pressed, it stimulated her uterus and bladder located inside her abdomen.
Normally, it wouldn't be a stimulus to feel pleasure, but the Demon Queen, being a demon, was a little different.
Most species with long lifespans had a common characteristic: their pregnancy rate was very low. This was also true for demons. So demons had evolved in a different direction to increase their birth rate.
Their bodies became very sensitive when they felt sexual arousal. This included not only the usual erogenous zones but also some of their internal organs. The uterus and bladder were no exception.
The bodies of demons were literally optimized for sex.
"What a perverted body you have."
He said, grabbing the Demon Queen's underboob.
"Ugh, wasn't it my son who made me this way?"
Even among such sex-optimized bodies, the Demon Queen's body was truly outstanding. Developed to the fullest by him, it was enough to put succubi to shame.
"I'll have to take responsibility for making you this way!"
Pressing his penis harder against her navel, he bit into her breast.
"Hahreung─!!"
Her bladder, tormented to the limit, spewed out its juices.
Pssh! Pssh!
The Demon Queen, who had released fluids that were different from urine yet almost absorbed, trembled with the surging pleasure.
"Haa, haeu, haeut…"
"You seem to be orgasm easily today?"
"Wha, what are you talking about."
She, who had regained some of her senses, lifted her waist. Holding her son's shoulder with one hand, she spread her buttocks with the other and presented her hole.
The target was only one place.
The man's penis, standing tall and hot.
"Now let's start."