"Spring! My college debut! The blossoming of my sexuality! Even now, I can't cum without being harassed by them." An unfortunate story in the spring of youth.

Ozu Kotarou (25) recently changed his career from a white collar worker to a high school teacher. His new workplace is at Odawara High School, a girls only school. He starts off his first day by leaving a significant impression on the entire school by announcing that he has no interest in younger girls, especially under age girls. Kotarou is assigned to assist Hara Takako, a fellow teacher, until he gets experience teaching. Hara is a beautiful 32 year old woman but is insecure about being single and is worried about her future. How will the relationship between these two people develop as they start working closely together?

People called “challengers” are gambling their life trying to escape from The 100 Story Tower to win 10 billion yen. But what will happen when Tatsuki Kuroumi awakes at this tower without remembering anything about his prior life, including entering the tower as challenger?

In an era where one in every twenty people awakens to a "special ability," Hiroto Takigami is a weak ability user who can only communicate with spirits. However, for some reason, his stepsister Rei, the most powerful ability user, harbors deep hatred toward him. The moment he graduates from an ability training institution and gains full control over his power, Rei kills him. With only one year left to live—his "remaining lifespan" set—Hiroto falls into despair. Just then, a certain spirit appears before him, revealing an unexpected secret about his ability...

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.

Ha-neul and Mincheol have been childhood friends for all of their lives, but their relationship takes on a whole new dynamic when they undergo a series of unexpected events. Although they vowed that they'd never be romantically attracted to each other, they just might be proven wrong... especially when things start to escalate and neither can predict where they'll end up.

Na Hae-soo's life unravels when her husband betrays her with an affair, leaving her burdened with debt and losing their child. In a devastating blow, she witnesses him with a younger woman. Broken and despondent, Na Hae-soo feels her life crumbling around her. However, a mysterious young man unexpectedly enters her life, asking to be taught about adult love. His vulnerability and sincerity begin to stir emotions within Na Hae-soo, challenging her to reconsider her path forward.

Kosuke found himself in a whole different world. WHAT?
Standing there with the wilderness to the east and a forest to his left, he decided to make good use of the occurrence, and tests his knowledge, to where he finds this amazing crafting ability, just like the games from his orginal world!

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)

The crown prince announced that her engagement was broken off and she was exiled. All my efforts as her attendant to avoid such a scenario were all in vain, unable to avoid the condemnation flag, my villainess suggested that she wanted to be my sex slave?!

_"Please break my hymen! I'm Kaito's sex slave after all. Please let out a lot in my baby room."_

She was once called the ice princess but now that has been warped, she's now begging for me to cum inside her. As the princess, she's as good as dead. She didn't show a single hint of regret or remorse during her first experience.

_"AHH! I'm cumming! Fine, I'll make you my sex slave as you wish!!"_

Together with Kaito who reincarnated and had known of her ruin, Chris became his sex slave happily.

New enemies, new bugs and an even bigger island.

Matthew is just another parasite in the chaotic dungeon city of Gray Neighbor. People say he’s a lazy weakling who gambles and drinks away all the money he gets from his keeper, princess knight Arwin. Or so people say. But the truth is, no one in this town knows what he’s really like — a ruthless protector who works in the shadows and will do whatever it takes for the sake of his mistress.

Iver is a dragon maou who stopped trying after historical heroes defeated her every time she resurrected. But the present day hero, Mirio, who found the holy sword by pure chance falls in love with her. And thus forms the couple of the maou with no self-esteem and the dopey hero. This is a story of how they come to know each other, fight, and find happiness.

Marie, a domineering and selfish princess, faced her end under the guillotine's blade after her subjects had enough of her. But instead of staying dead, Marie finds herself back a year in the past, though no matter what she does she can never escape the fate that awaits her in a year.

Eventually, after Marie learns that the only way to escape her own execution is to conquer a large swathe of 'romantically troubled' women, she decides to use her own 'royal charisma' to build a yuri harem!

A survival yuri fantasy about a princess who defies death is about to begin!

Kanae is a girl who is struggling to fit in with the popular clique at her high school. Because she had been bullied in middle school, she has developed an acute inferiority complex that had led her to engage in compensated dating in order to feel wanted.

In comes Hiroshi, a high-school baseball star who became drawn to her after finding her crying during a group date at a karaoke bar. Thus begins an unhealthy relationship between a mentally unstable high-school girl and a jock.

From MangaHelpers:
People have been created that are human-animal hybrids, and powerful businesses bet on the outcome of their duels. College student Nomoto Yuuya's casual acquaintances ask him to drive them around to pick up girls one day, which he soon finds out means by force. The girl they kidnap is an animal-human hybrid named Hitomi, who slaughters all of them except Yuuya. Hitomi is a honey badger, which has been called the most fearless of all animals. Now Hitomi is assigned to stay with Yuuya, for his protection.

One day, school teachers come as freeloaders to the inn run by his parents!? Kazami Hiro, a high school boy, decides to take care of the inn and his future!? Under one roof, The forbidden harem romantic comedy begins!!

Alice Fujii still isn't having much fun. She survived an assault of psychotic bug-themed assassins at her school, but all the battles, the truth behind her family, the two betrayals from false friends who ended up dead and the loss of her Kumoito knife-gun took a toll on her mental state. As such, she spends her days alone splitting open the heads of the rapist zombies who overran Japan since the aforementioned incident. The Organization wants to hire her as their new Boss, and elsewhere her allies Gokiburi and Kabutomushi are looking for her. What will become of all this?

A girl who calls herself a devil appeared before a timid student named Fumio Kijima. The girl claims to be a campaign girl from the demon world and she gives him the ability to “summon a room” from nothing but thin air.

At first he doesn’t abuse his power and uses it as a convenient ability in his every day life. But one day he is bullied by his classmates under an unfair pretext and is made to suffer. In the past he would have wallowed in misery and cried himself to sleep, but now he had a power to call upon.

“I will make them regret it!”

Using his powers to summon his “room”, he begins his era of confinement and brainwashing to achieve his goals.

Regnard defies expectations by enrolling in the esteemed Royal Academy of Lasarzia despite being a dropout.

However, during the Blessing Ceremony, he receives a peculiar skill called "Blessing of Sleeping Together," leading to ridicule from classmates.

Despite the mockery, Regnard discovers the true potential of this skill when he spends the night with Frost, an honor student.

This revelation leads to unexpected adventures and a harem fantasy, as Regnard navigates the challenges of his newfound abilities and hidden desires.