Since ancient times a group of grotesque monsters known as Onigumi have dwelled in the shadows of Japan. To defeat these monsters that gather negative... more>> emotions, humanity relies on Sacred Treasure using heroines known as the Blade Wielding Battle Princesses. Sakura-hime is one of this Battle Princesses who will be defeated and forced into becoming a le*d female s*ave thanks to hostages being used against her. Like this, a shameful game to trample down her noble heart will begin. <<less

Gio, the demon lord who reigns over the Arobagne Continent, is suddenly summoned to another world in the midst of battle with a hero.... more>>

The beautiful women who welcomed Gio in this unfamiliar world are: Queen Alisa Est, the queen of the Est Kingdom and Duchess Sheila Eunera, the younger sister of the late Est king.

The two of them performed a ritual passed down in the royal family for generations to summon Gio as a hero, entrusting the survival of their country to him in a time of crisis.

Believing in Gio as a hero and relying on his power, they tell him about the ruler of the Kirsch Empire, who is invading the Est Empire and claims to be a mage and the Demon Lord Kirsch.

Intrigued by Kirsch's power, Gio decides to become a hero.

And as compensation for his services, Gio requests the bodies of Alisa and Sheila!

With his overwhelming magic power, he defeats countless enemies, making the bodies of beautiful women as his reward.

The story of lascivious Demon Lord as Hero begins! <<less

Harem Dynast is the story of a princess set up in a political marriage with King Lorent, a great conqueror who is often mentioned in... more>> the Harem novels. <<less

The main character, Shota, is an ordinary student.... more>>

When he returned home as usual and opened the door, he was transported to a royal palace in a world he had never seen before.

There, he meets the prime minister, Berlina, who informs him that Shota's face looks exactly like the dead prince.

Shota is asked to become the prince of this country and leave behind an heir, so he decides to have s*x with the wizard Torte and the female knight Eclair to make a baby. <<less

Harem Sister follows Hilcruz, son of Hilmedes from Harem Castle, as a church shelters him and he plots his revenge against the Ishtar Kingdom.

The girl Toudouin Saki has decided to fight as the transforming heroine Hengen Souki Shine Mirage. This is to battle the evil organization known as... more>> Dark Crime, invaders from another world who have finally discovered her weak point as a transforming heroine… …humiliation and shame are about to be piled onto the formerly undefeatable phantom heroine. Will her prideful nobility be shattered as her body and soul are polluted in filthy white cloudy fluids…!? <<less

Mikoto and Takeru both belong to the [Black Cat Demon Extermination Brigade]. One day, they are sent to the prestigious Seisen Girls’ Academy in order... more>> to exterminate the youma that have been sighted on the school’s grounds. They infiltrate the school as one of its students, but as they continue to fight demons night after night, they discover dark secrets lurking around the place. Just then Takeru is afflicted by a curse and the two are attacked. To save her sister from the clutches of lust, Mikoto ventures forth right into the enemy’s den, only to witness the female students of the academy giving themselves away to pleasures of flesh. Limbs entangled, the demonic tent**les dance wildly. While indulging in one another, the two sisters are going to be sacrificed, each and every nook and cranny of their bodies to be used to breed all kinds of youma… <<less

Girls on the student council drink what they think is a love potion, but it makes them lactate instead. They demand the only boy on... more>> the student council help them out with that. <<less

Crimson and sweet, the bond of the three.... more>>

Betrayed by her lover and charged with a crime she did not commit, Rosa chooses to end her life by casting herself into the river. She survives this, and wakes up in a mysterious garden where she is met by two vampire girls -- Calen and Trill. They ask her to join their cause and let them drink her blood, to which the woman agrees. However, drinking blood turns out not to be such a simple task. Something is needed. That something is s*xual arousal...

And so, Rosa's days of her body being developed in the hands of the girls begin. <<less

The story of a heroine who battles evil as a heroine of justice facing off against an enemy with the power of hypnosis. With sensitivity... more>> and common sense modification being performed on her, her sense of morality will begin to erode under an unending tide of pleasure. <<less

A follow on from Satou Kuuki's Love Mary hmanga. I would recommend giving that a read before reading this.

This is a story of a four-woman superhero group called the Thunderclaps in a world full of superpowered people called Offbeats.

Ayane, a little sister who loves her brother too much, having her love ran amok, confined Tomoya. She doesn’t want their childhood friend, Sayaka to... more>> take him away from her so she took his first time by reverse raping him, and continued to have baby-making s*x in order to become Tomoya’s wife. <<less

The series follows a special kind of shrine maiden who specializes in exorcising s*x Gods

Some time has passed since the events of Harem Dynast, so Lorent and Ansandra have a teenage daughter and Lucy has a teenage son. The... more>> story follows that son who is childhood friends with the princess and has been placed in charge of a merchant caravan full of beautiful girls and women. <<less

When the heroes announced the start of their journey to defeat the Demon Lord, it caused a great commotion. Amidst all this, a merchant tries to take advantage of the opportunity to make a profit.... more>>

On the way to Andersen, a town where people, goods, and money gather, a female warrior arrives to save the merchant from a gang of thugs.

Seeing this as a business opportunity, the merchant immediately begins negotiations with the warrior. He tries to sell her an expensive blue dragon sword.

However, the female warrior has no money, and so she proposes to fight a duel with her own body on the line for the blue dragon sword.

No way. There is no way that a weak merchant can win against a strong female warrior!

However, the female warrior’s body is voluptuous and sensational.

The warrior asks again,

“Will you accept the duel?”

Then the words spill as if it came from the merchant’s loins.

“Alright. I’ll do it. Let’s duel!”

And so begins the merchant’s journey, full of feminine woes, all to secure huge commissions! This is a full-length adventure fantasy story centered on a traveling merchant, with female warriors, priestesses, sometimes female students, Heroes and even Demon Lords joining the action! <<less

As a reward for preventing the assassination of the current king, Rou Coral is rewarded with becoming and escort of the Royal Princess Reaina who... more>> the boy adores so much. Thus begins his new life of servitude under his beloved high-headed Princess full of happenings and happy little accidents. Surrounded with Busty Head Maid, young Loli Princess and a Childhood Friend Maid, for the boy knight today is yet another day of struggle in this womanly paradise!! <<less

Poor factory laborer, Todo Yoichi (35 years old, single, working poor) with a certain young man involved in truck incident. Then from the woman who... more>> called herself manager, inform him that he just involved in ordinary accident. With a cheat ability they will be reincarnated to sword and magic fantasy world, but unlike the young man, for Yoichi that didn’t have the existence for his reincarnation in that space he will be reconstructed in former body. There is no cheat ability for him but he get [standard skill pack] or something. Yoichi’s [judgment] [infinity storage] [language comprehension] [return] skill that often coming out in light novel. Working poor is want to break free from life that only working for live, while in order to live in another world with hope that begin swelling in his chest, whatever you think this is the former world…. <<less

Shouji, who was born in a poor family, had the qualities of a “yuusha”. ... more>>

However, he was passing his days as a sloth, drowning himself in alcohol and potions(drugs). While relying on only violence to make a living, he encountered a girl who is a talented alchemist, but also mired in debt.

Potions created by this little girl were mind-blowing as it had the highest purity he had seen. It was a product that was worth loads.

He was through with fame and honor. He no longer had the desire to only make money to live as his purpose.

He felt it wouldn’t be so bad to smuggle those potions in the underground world of crime and drugs.

Brewing this restorative item that gets people high, in search of dirty money and comrades for his gang, hanging onto the potions that let him loose, the mad “yuusha” challenged the demons who are hidden in this demi-world. <<less

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

The setting moves out to the high seas for the second entry in the Harem Series: Harem Pirates (ハーレムパイレーツ)

Against the Demoncore invaders from the demon world, Heaven’s glittering Saint-Princess Vermillion battles against them. However, she falls to the devil girl Eris’ trap and is forced to undergo a month of fiendish f**anari training. ... more>>

In addition, her mother Celestia is deprived of her freedom and is also forced to undergo the same shameful training as her daughter.

tent**les, slimes, body graffiti and other pe*verted plays such as an on**ole quiz assault the girl’s penises. Will the humiliated heroines be able to resist and become victorious? <<less

Originally supposed to be a storeroom, one day Saino Sōhei’s bas**ent suddenly becomes a grand labyrinth. But this wasn’t your average dungeon, rather it was where one could raise their (Love) Level by engaging in le*d acts with girls.... more>>

Whenever Sōhei acquires a special item from his quests in the labyrinth, he in turn uses them upon girls he likes. But as he further delves deeper into the dungeon, will his relationships with girls change as well……?

This is the story of a boy exploring dungeons, girls and sex! <<less

A teen is summoned to another world as the Hero. It turns out the Hero can power up women with his cum.

Blum Dilmond killed the demon king and became a hero, and for some reason he was pursued by the Kingdom and tried to escape.... more>>

While spending days trying to avoid the assassins aiming at his neck , he suddenly came up with an idea.

The dungeon which is the home of the Demon king. If it’s there, then he could be safe.

Blum didn’t hesitate and went into the dungeon, but he met an unexpected person. In the deepest part of the dungeon there was the appearance of a mage who helped him fight the demon. Moreover, the subordinate of the Demon King that served as a maid is also there. The name of that maid is Irene.

Since their interests match, they agreed to both cooperate with each other. The demon king is dead and they will personally rebuild the worn out dungeon, they began to work earnestly in order to make a safe haven──. <<less