An introverted high school student, Souichi Sakuraba, is being bullied severely by the “Yokai” classmates. The bullying escalates, and Souichi’s childhood friend, Azusa, who was the only one who trusted him, is defiled by them. In front of Souichi, who was in the depths of despair, the succubus, Asmode, appeared. Souichi makes a contract with a succubus who possesses a mysterious ability, and decides to make the bully’s loved ones suffer the same pain as himself by “cuckolding” them. The obscene revenge by “NTR” begins.

Rin's village getting attacked by bandits doesn't keep her down in the dumps for long! Picking up a sword housing an extraordinary pervert… I mean hero, Siegfried, she sets off on a journey of many bouts with various degenerat… ahem, heroes!

Lucas has a hard life. In his mid-thirties, a mixture of failures has left him old and crippled, playing pack mule to a couple of young adventures.

Then one day, he pulls a magic sword from a stone that tells him he has been chosen to become a hero. Given a youthful form, Lucas must use the power of the sword to vanquish evil and attain a massive harem.

Before you ask, it’s not isekai because he’s been in this world from day one. It is wish fulfillment, though, so in the end it’s basically the same thing.

From Friendship Scans:

Beginning of 16th century, Alexandra was captured by slave traders in Ukraine during one of their many raids. When the traders arrived in Greece to sell the female slaves, a young handsome man named Mateus bought her and promised to give her true freedom. He hired countless teachers, scholars, and palace ladies to train her into the one perfect woman of her time.

Mateus's kindness has caused Alexandra to deeply fall in love with him, and she secretly wishes to be his concubine. But cruel fate! Mateus has already promised her to his best friend, who is Suleiman the Great, Emperor of the Ottoman Empire! Mateus promised Alexandra of true freedom, but where is freedom when she is in another man's harem and can only look at the one she loves from afar?

Not willing to endure this agony, Alexandra promises herself that one day, she will free both of them from their bird cages. But Mateus is the Grand Vizier, a power only second to the Emperor himself. So Alexandra must become the most influential concubine in order to have any hope—which also means bearing Suleiman's son. However, Suleiman already has a son by another concubine, and this woman is determined to keep her son as the only prince and only heir.

Thus begins the story of a slave that becomes the story of one of the greatest empresses of all time, Alexandra, the woman who would one day be known as Roxolana, Empress of the Ottoman Empire.

Because he did not pass his college entrance exam, Kagami Kyosuke cannot stay close to Kojo Hikari, the love of his life. So instead he gets a part-time job near her university and buys an old camera since Hikari is passionate for photography. But as it turns out, this camera also possesses a secret which will get him involved in all sorts of embarrassing and awkward situations, especially with Botan Oshikiri, his senpai and co-worker. How will Kyosuke's life play out now?

What happens when several women with special circumstances compete for a rich handsome businessman's hand in marriage? Let the curtains rise on the “Courtship Battle Royale” show, where anything goes! Thus begins the beauty Gotou Yuuna's struggle to overturn her debt-straddled life!

Lucia grew up not knowing she was a princess. But when her mother died, she entered the palace and had the chance to see her entire future in a dream. In her dream, when she reached 19 years old, she was auctioned off to the bidder who offered the highest dowry. Her life became miserable from then on. When she woke up from her dream, she was determined to reshape her future, realizing that she had plenty of time before the crucial turning point. Thus, she begins her journey to change her dark future.

Amona, a dark summoner and demi-human who uses demonic powers,
is the newest addition to the party of the uptight priest Roni.
Everyone expected the two to dislike each other and to have nothing to do with each other.
But to their surprise, on their first day together as an adventuring party, they had a one-night stand...!

Housen is a painter of erotic art in the Edo period, who stumbles into a murder mystery involving women who have hooked up with one of his patrons. With the help of Tsubaki, a girl he runs into on the street who seems to know more about him than he does and is an artist herself, they start unraveling mysteries involving sex, murder, and occasionally the occult...

Takemura wakes up after falling ill for 3 days and realizes the world has been overrun by zombies but for some strange reason he is not being attacked by them! What will he do now with this great power he has?

The Yoshinomiya Municipal High School 2nd year students embarked on what they'd hoped was an educational trip with their friends and away from family but it was not meant to be... Their ship was hit by unexpected rough seas and crashed on a strange island! The surviving students are trying to understand what happened but soon they realize they are not alone on this island and the locals don't appear to be very friendly to strangers!!!

Death row prisoner. Criminals who committed violent crimes and were sentenced to death by law. Akari, a woman who had no meaning in the prison island “Deep Palace” near death, accommodating them, acted with a certain purpose. Just when she thought she was able to complete my purpose safely, the death row prisoners have started to kill each other? A battle royal “Killing” was held where men and women were separated and the remaining team could escape!! Can Akari survive the “Killing” safely and escape from prison? Blood, Eros, and dangerous guys fly around, all the characters, a Battle Royale of all scum prisoners!!!!!

Ark is the next heir to the noble branch family, Nagara. Even so, he’s constantly mocked for being weak in battles, and the girl he loves, Aurelia, is to be married to the Crown Prince.

Unable to bear his weak self, he proposes to Aurelia that they run away together. But even as Ark attempts to change his fate, the cogs are already in motion for a demonic end of the world, and he may be the hero that can rise up...along with his harem of beautiful women!

A world where cute girls become cards and fight.
And it's terrifying (happy?). In other words, you have to get the other girl to take off her clothes.
Use the girls, who materialize from the cards, and their intelligence and strength to win!
If you win, the other girl card is yours!
A harem is not a dream.
The long-awaited comic book version of this sexy card battle comedy is here!

One day, Sanada Shirou, who works for a black company, is transported to another world. Using his "creation magic", an ability he gained when transported, he opens an inn and is supposed to lead a slow life, but this other world is a little strange?! It is a world where women are overwhelmingly dominant, where women do dangerous work and battle, and men are powerless and are protected! The daily life of entertaining (in many ways) the women of this other world begins...!

Web novel: https://kakuyomu.jp/works/1177354055503576578

When the Devil King announces his retirement, he calls forth his two sons, Yomi and Sora, to give them each a quest. Whichever of them finds a pure Yamato maiden within a year would inherit the throne of the Devil King, while the other would die. Thus begins Sora's sex-fuelled adventure to find a woman that can satisfy his father...
(Sakigake!! Otokojuku Wiki)

Sakra, the last surviving princess of a fallen kingdom, is being hunted down for the power of Ambrosia she possesses - the ability to grant divine strength, but only to a human. With no human companion, she decides to summon one from another world in a desperate attempt to find a knight to protect her, but the man who answers her call is less than what she had hoped for.

A man was about to commit suicide and decides to search for a way to die in the internet, but then he found an odd site that asked a lot of questions and had a point based system that allows you to create skills and abilities for a character. He took interest in it and when he finished setting his character he was asked "You will now be transported to a world with the settings you choose, coming back is not possible, do you still accept?" Then without thinking much of it he pressed YES and found himself in another world with the skills and abilities he chose to have.

A mysterious command given to Tomita Yuzu, whose livelihood is assassination. "Kill the one you meet now." However, what appeared in front of me was another self ...!? An unpredictable "Hitman's" action comedy presented by Yokusaru Shibata and Makoto Sawa's "Blue Striker" duo !!

Yamada was hospitalized after breaking both hands, to make things worse, due to a unknown condition he has to ejaculate every three hours. The ward is full of evil nurses. Will Yamada be able to live and be discharged from the hospital?

TLDR: Guy has busted hands, gets sent to hospital for chronic ejaculation, guy gotta get his nuts busted by busty whacko nurses.