The young boy Felix, who admires the Kingdom’s Knights, is suddenly on a certain day set up as the Kingdom’s crown prince, unanticipating that he would live a life immersed in s*x. There is a queen who is also a mother, there are maids, and an ex-boss female knight, but other cougars approach! The innocent boy’s reasoning is on the brink of destruction.... more>>

With over 50 books at this point, the Harem Series is by far the longest 18+ LN series out there. Most of the novels aren’t directly connected, but they all take place in the same fantasy world.

For now, let’s take a look at very first entry in the series: Harem Castle (ハーレムキャッスル). <<less

Julia von Vandeid.... more>>

A woman with thick glasses and hair tied into a bun. The exclusive maid of the unsociable Princess. She was actually a reincarnated person, and had nothing to do with the main character of an otome game. She became the caretaker of the Princess, who would become the villianess. She loved children and this ignited a fire within her!

The Princess is just too adorable and on the day that Julia said that she would follow the Princess when she gets married; the Princess worried about her instead!

“Say, Julia. I’m happy that you’re by my side, but aren’t you going to get married…?”

Will Julia find love? <<less

Once an imperial princess, now reborn among the lowest of s*aves of the nobility.... more>>

As Nanzhao’s eldest imperial princess, she received the burden of an imperial ruler and took to the battlefield in tumultuous times. Instead of being a hero, her actions were vilified by officials as meddling in court affairs. Watching her trusted confidante die as she stood among a sea of flames, her tattered heart was pierced by an arrow shot by the one she loved most.

In her previous life, she was known as Ning Rulan.

Resurrected as a palace maid carrying out the most menial of tasks in Beimin’s imperial palace, she is resolved to take revenge and save her younger brother. However, many devilish and vindictive nobles stand in her way as she navigates through the dangers of court politics.

Travelling across nations and unravelling secrets, she carves out a new place for herself.

A place for the woman now known as Su Xi-er.

Will she remain shackled to her past? Or will she reach for the chance at happiness before her?

No matter if she is Ning Rulan or Su Xi-er, this time, there would be no more regrets! <<less

"You're going to have s*x with my daughter."
"Wha-"... more>>

The Fregrance family, one of the kingdom's five great noble families, had no sons, so as a desperate measure, they chose a young man from a branch family, had him have s*x with a woman from the main family, and the resulting child would be the successor.
And the chosen one was me from a branch of a branch family and further branch from that branch family.
Thus, Lady Ritia, the eldest daughter of the head of the Fregrance family, and I would have s*x in order to produce an heir. <<less

You have reincarnated into a different world... more>>

r*pe your 8 year old sister and turn her into a meat toilet!

imp**gnate your mom and make yourself a new sister!

There’s an obedient maid who loves sex!

s**en is used as milk for your daughter!

M*sturbate using your sister’s ass wherever you want!

Kidnap any girl you want and turn her into a s*x s*ave!

r*pe and imp**gnate anyone you want!

Use elves for handjobs, and rabbit girls for mating!

Brainwash all of your classmates!

And deceive the blind princess!

Have a granddaughter with your daughter!

Even angels beg for your s**en!

This is the story of me having s*x as I please in a different world <<less

The weak prince of an insignificant country, Davey. After becoming comatose, his soul escaped to a temple where the souls of heroes gathered. ... more>>

He trained for a thousand years and has now returned as a max level hero!

“Just you guys wait, I’m gonna face you all head-on!”

The refreshing story of Davey’s royal life and revenge has just begun. <<less

Being born as an emperor may seem like a jackpot. There is only one person who could call themselves ‘Emperor’ in the Eastern Continent. He, who was born on this supreme seat, would not have a smooth sailing life.... more>>

The previous Emperor, his grandfather, and the person who should have succeeded the throne, his father, were assassinated by the aristocrats. The eighth emperor of Bungdalto, Carmine is a convenient puppet for the aristocrats, and a palanquin who can be killed at any time when no longer needed.

With the emperor not having received a proper education and the empire collapsing due to political strife among the nobility. The empire teeters on the brink of financial collapse, unable to deal with interventions by neighboring countries, and has no choice but to allow the independence of its frontier areas. The precarious state of the empire is clear to everyone. <<less

After being told by the crown prince that their engagement was to be annulled, Countess Lorona died.... more>>

Some were relieved that they didn’t have to go through the hassle of the engagement being annulled while the others were happy to get what they wanted for a long time. They thought everything would go well, but the impact of Lorona’s death was massive. <<less

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

Li Yiyi entered the Fan family as the eldest young master’s personal maid, but her real intentions were to steal his sperm.... more>>

But soon, her coquettish young body was taken by the Fan family’s men, making her the maid of the four young masters for their personal use.

As for the sperm she looked for?

She got as much as she wanted. <<less

Jiang Mu, who transmigrated into the book, becomes the villain, and after failing to pass the plot set by the system dozens of times, finally gets the goldfinger: a diary.... more>>

[It was sunny on March 5th, Ding Nanrong’s body is very explosive, but the clothes are so ugly, ugly, and ugly…]
Ding Nanrong: “Jiang Mu, don’t think I won’t kill you!”

[On the evening of March 5th, Xue Menghan was about to break off the marriage. This nympho is so s*upid, what lines should I say?]
Xue Menghan: “You’re the nympho! You’re the one who’s s*upid! Who do you look down on!”

————–

I thought I would write a diary to get a reward, play the villain, finish the plot, and live a YOLO life.

But, I didn’t expect that the female protagonists actually had a copy of the diary, and they didn’t play cards according to the routine, and the plot became more and more crooked.

—————

The more he wrote in the diary, the further the story went from the main story.

The more he wrote to set up the heroine with MC like it’s supposed to be, the closer they got with the villain (Jiang Mu).

The more he wrote in the diary, the stronger he got. (Although happy, but it’s troubling when he had to take a beating. And it doesn’t hurt at all, had to put an extra effort’s in his villain acting skills.)

Nothing ever goes as he wishes. <<less

I reincarnated as the villainess, Eliana Mussieux, who was killed by the scheming Emperor.... more>>

Rather than do nothing and die according to the novel, I planned a path to survival by seeking him out.

But . . . something’s not right?

I haven’t done anything yet, but the Emperor started to cling onto me first.

* * *

“Don’t go.”

Verkley grabbed Eliana’s collar. His gaze was entirely focused on her. Then, he whispered imploringly once more.

“You tamed me, Lili. You have to take responsibility.”

He bound her hands so she wouldn’t move. Before she knew it, Verkley’s lips touched Eliana’s fingertips.

From her fingertips to the back of her hand, his lips trailed kisses as if he were leaving a trace.

His eyes were fixed on Eliana the entire time.

With an unreadable expression, he pulled Eliana’s arm.

And closed the distance between them.

Then growled low with an insidious smile.

“If you go, I’ll kill that bastard.” <<less

Waking up at the start, Li Mubai found himself transmigrated into a superbly rich, handsome person who inherited a worth over trillion dollars from his family.... more>>

He had family backing and was handsome.

He could spend any amount of money.

If one encountered such a situation, they would even wake up laughing from their dreams.

But what s**ked was that he just transmigrated over and would immediately end up getting assassinated?

The one who wanted to assassinate him was an assassin heroine in the book!

How could he stand this!

At this moment, Li Mu Bai awakened the Heavenly Destiny Villain System!

The opening draws were the Combat prowess of the Master-Level, Villain Halo, loyalty potion...

"Assassination?"

"Oh, I think all she had to do was send 'dishes'...."

Li Mubai smiled slightly. For the upcoming assassination attempt, he began to feel a sense of anticipation. <<less

“I will… play with Your Highness.”... more>>

Eloise, who entered the palace as a maid under the order of the Empress, was trapped in a dark playroom and became the Crown Prince’s toy. Rishid, the unfortunate crown prince whose mental age had regressed and suffered from aphasia.

He was like a broken doll, but as he worked with Eloise, he gradually regained his ability to think according to his age and began to speak.

However, the Crown Prince did not let her go and tried to tie her to stay by his side even when his illness was cured and was no longer needed as a playmate.

But as a different type of 'play.'

Eloise was trapped in the Crown Prince’s palace and loved by him day and night, but she was afraid that one day she would be forgotten like a toy she used to play with as a child.

Eventually, she escaped, taking advantage of Rishid’s carelessness…

“Did you have fun playing with me?”

He had no intention to let go of his toy.

* * * * *

“What would they all think about when they see you? Everyone must be busy trying to get a bite, for being so naughty.”

Eloise shook her head frantically whenever he uttered harsh words. Tears dripped down her eyes filled with unjust light and soaked his fingers.

“I'll let it go freely, and everyone in the Imperial Palace would be wagging their tails.”

“…...…”

Eloise couldn’t answer any of his words.

‘Because I didn’t know what more severe, corporal punishment would be inflicted if I did. At times like this, I know from experience that it is best to match his mood.’

“You need to be disciplined,” he tilted his head.

“Come up,” he said, spreading her legs wide. <<less

A child born with the fate of the curse.
Three lives ended and the fourth life began.... more>>

In the first, she was beaten to death by strangers.
In the second, she died in a foreign land while running away with a weak body.
In the third, she lost her footing in the mountains and died.
In the fourth, she thought she would be loved…!

“You… You really left me behind! In the castle where the Dragon of Judgement lives!”

Fate came suddenly one day.

“What… Is this?”
“Master, this is a human baby.”
“So why is this here?”

Can I live a long, beloved life? <<less

The protagonist, Roush, spent every day happily with his beautiful childhood friend. One day at the age of fifteen, he attended the ceremony called the... more>> "judgement". There, Roush was bestowed a useless skill "Unimportant" while his childhood friend was bestowed the legendary skill "Sword Princess". The hero caught wind of that and pulled in Roush's childhood friend as his companion in the subjugation of the demon king. Roush was going to become separated from her, but they made an engagement promise at the time. He was earnestly waiting for his childhood friend to come home. And so, at last, his childhood friend had returned. Roush was overjoyed as he welcomed her home. However, it was already too late; she had already given her body and her mind to the hero... In despair, Roush vowed to have his revenge. <<less

The Great Demon King, once on the verge of world domination was betrayed by their disciples and sealed away. They were resurrected after three hundred years.... more>>

The Great Demon King succeeds in impersonating Aquim, a man who is greatly hated by those around him, begins his quest above all, his favorite delicacy, hatred.

Elena, a beautiful woman with black hair and eyes, dislikes Aquim as his valet, but cannot disobey his orders.

Mina, the ice doll princess who challenged Aquim in order to save Elena, but was captured in the process.

And Mina’s best friend Laura.

When the Great Demon King’s finger moves, these brilliant and beautiful women turn into mere playthings. <<less

Being reincarnated into a game world, I not only became a girl, but a highly-popular highly-skilled beautiful NPC maid? ! Most importantly, on my second... more>> day [as a maid], the favourability game mechanic was introduced, as long as a player fills my favourability rating with them they become my new owner and can take me home? Nevermind that it’s not just male players, but why do elves and orcs or even female players have favourability ratings with me? (╯‵□′)╯︵┻━┻ “I should just starve myself to death, or die on the streets, … <<less

She rescued the male lead from a fantasy novel and his sister, who were abused by their uncle, and helped him grew up as an Archwizard to save the world.... more>>

“Can I call you Mom? J-just once…”

She thought in the warmth of the children who called her their mother. No matter what happens, she’ll protect these children.

* * *

She met a man who was completely different from the nobility she had seen so far in the Southern Tors, where she had escaped safely and settled down.

He respects people regardless of their status and thinks of others before himself. And, having dreams that he will never achieve.

“Someday, Tors will be strong and rich enough that no one has to worry about their livelihood and their lives. I can’t rest until that day comes.”

She thought that would be enough if she and the children could live happily ever after.

But why? She wanted to reach out to the high sky that this man was looking at.

“Your Grace.”

Even if it’s only a few years.

“I’ll help you.” <<less

Shota Iijima picked up erot*c books during his childhood and suffers from severe foreign sister fetish.... more>>

Thereafter, from the years between his age of 12 to 15, he m*sturbated 999 times. For his 1000th round of m*sturbation, he had been transferred to a different world.

And Shota is sold as a s*ave.

A paradise for women and hell for men… Valhalla, the pen*s mansion. <<less

Sawatari Takeru was suddenly teleported to a remote village in a different world. He immediately shouted with joy, “Hyahaa! Another World Teleportation! I’m the Hero!”, he then went to the nearest store, sold all his belongings and purchased an iron sword, then to the Adventurers' Guild and took a Crazy Dog Subjugation Quest. He stormed out of the village and fought the dogs… and got pwned in return… easily. Just as he was about to die, a female Adventurer saved him. She introduced him to a safer job as a laborer for a farmer. The dream of being a Hero is over on day one.... more>>

After a week of work cleaning cow dung, he discovered that Japanese letters is considered sacred text in this world and used in official documents. Thus he applied for a job in the local government office and was made an assistant secretary. As he worked in the office, he tried to reproduce modern inventions in this world. He found that in the surrounding area there were the resources to create Gunpowder. Thus, with the help of his superior he began developing explosives for mines, then muskets and cannons. Eventually he started up a company with s*ave girls as employees selling soap and crepes.

At the same time, the kingdom was threatened by the rising activities of monsters and Takeru’s superior suggested to the capital to use their firearms to fight back, but the knights just laughed at them. To prove them wrong, Takeru raised a volunteer army from s*aves and farmers to exterminate the threat. <<less

My beloved grandfather who cherished me passed away.... more>>

My father asked me to organize the articles that he left behind.

While rummaging through one of my grandfather’s boxes, I found a smartphone that would forever change my life. <<less

Evan Douglas despite being born in nobility, he was bullied by everyone in his family due to his low mana capacity and even more due to his black hair and eyes that does not run in the family.... more>>

The only person who is kind to him is his maid Serafina from the wolf beastman race that is of similar age and he is later exiled from the family and Serafina follows him.

But either by luck or fate, after suffering a hit in the head, Evan started having dreams of a place with extremely high-technology beyond anything he could imagine, on it he saw dolls being controlled by some strange magic and glowing windows with moving pictures. This dreams leads him to develop a new magic he calls control magic, that does not belong to any of the known elements. Now Evan with his new abilities goes adventuring with his maid Serafina. <<less

Frey has been fired from the academy after being set up by his colleague.... more>>

He receives a job offer from a mysterious maid.

The job offer is to be a tutor to the five daughters of the Demon King!

At first, they didn’t trust him to be taught by a human, but as he demonstrates his abilities, he begins to gain the trust of the Demon King’s daughters.

Frey’s new life as an educator under one roof with five cute girls who are different in personality, but problematic girls begins! <<less

Eva Massies, once a daughter of a noble family, now lives in a house of acquaintances as a maid. She met him for the first time when her life was at rock bottom. Her handsome, strong, and dazzling former fiancée, Crown Prince Edward.... more>>

“Why are you crying, hm?”

Edward asked worriedly as he took her hurt foot.

“…It’s embarrassing. Hic–”

Perhaps it was because of how affectionate his voice was. A voice that had been suppressed all this time brazenly slipped out. To top it off, being soaked wet in water, wearing a pair of worn-out, patched socks, hitting rock bottom, all of these were shameful.

“Are you feeling ashamed because you’re hurt? Your foot is still beautiful even like this.”

He said those words like it wasn’t something to be concerned about.

“There’s no need to be ashamed. For whatever reason, you did nothing wrong, Eva.”

He soothed her fear by calling her name. Only when he’d left did she realize. That man who stayed only for a moment, that man who would be deeply engraved in her heart, was her first love.

* * *

Once again she met Edward after going through a rough time.

After defeating numerous nobles’ daughters and becoming a lady-in-waiting.

After her heart grew stronger.

After she no longer thought about him.

“It’s the lady of the bedchamber’s job to make sure that everything is sufficient and provide anything that Your Highness needs before sleep. That’s why, if you wish to hold hands, do as you wish.”

“Have I ever acted as I pleased in front of a lady even once?”

His voice was cold, drastically different from before. He held her, his glaring eyes felt very intimidating to her.

“If I knew you’d come to the imperial palace, I wouldn’t have let you go that day.”

Edward, who had his face close to her, warned in a low voice,

“So this time, I was thinking of doing anything however I wished.” <<less