Eugene Dawson is a young man with a goal: to become strong. He trains under and lives with his mentor, Liza Parsandra, who is regarded as a Sword Saint. In terms of physical prowess, Liza is without equal, and despite her scatterbrained nature, Eugene still enjoys each day with his adorable mentor. However, her defenseless nature, drop-dead gorgeous looks and tendency towards unintentional skin-ship make training feel like an impossible task...?!

"Is this really going to help me get stronger?!"

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.

Average high school student Mikagami​ Kouji is a hardcore gamer. One day he gets isekai'd and he only gets the skill "copy" which is apparently useless but we all know it's secretly OP or something. He's enslaved to be a gladiator by his summoner, the big booba, head priestess Zayd. He has to fight in the Colosseum and if he loses he gets raped.

Having forgotten his keys, Tamao Hiroi a high-school student, returns home using the back entrance and is surprised to find a stranger in his bed… Soon he realizes this is no stranger but Ran Homura, one year younger, softball ace and one of the most beautiful girls at school! Hiroi watches her masturbating on his bed and instinctively does the same peeking through the glass door. He is soon found out though and a strange 'master/slave' relationship begins!

Hisaya Minato, a normal high school student, has a female friend who is a bit peculiar. She is Aoi Hatsuki, the most beautiful girl in the high school. For some reason, they get along very well, and since they happen to live on the same floor, they gradually become good friends, coming and going from each other's houses. One day, Minato suddenly asks her to show him her panties. At first, Hatsuki is reluctant, but then she starts to roll up her skirt?

Do what we want, when we want, with the person we want. Such a relationship needs no label.

Murata and Tomoka, who are tired of their past relationships, become friends after sharing a game online and decide to go directly to a love hotel. After this evening, they meet regularly and have a good time together.

On his way home from work, Aokai Seiji, a struggling actor in the JAV film industry, accidentally looks away and got hit by a magic mirror JAV Truck! He wakes up in a medieval-like world and gets caught up in the "filming" with beautiful elves?!

Healing magicians cannot fight alone.’ Keare, who was bound by this common knowledge, was exploited again and again by others.
But one day, he noticed what lay beyond healing magic, and was convinced that a healing magician was the strongest class. However, by the time he realized that potential, he was deprived of everything. Thus, he used healing magic on the world itself to go back four years, deciding to redo everything.
This is a heroic tale of one healing magician who became the strongest by using knowledge from his past life and healing magic.

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.

More than ten years have passed since dungeons suddenly appeared on Earth. In a world where people with excellent skills play an active role as adventurers, the skill that high school student Takeshi Miyamoto has discovered is... "breast correction"!?

Takeshi is confused by the unique skill he has never seen or heard of. But there seems to be a surprising number of girls who need it.

University student Kang Ji-ho, accidentally saw Seon Woo-hui's breasts at a drinking party, and avoids her because she couldn't resist the desire to see them again.

"Just give it to me straight. Why are you avoiding me?"
“…If I tell you straight up, won’t you get angry?”
"No. If you don't tell me, I'll kill you."

I-I mean...

“When I look at you… I keep wanting to see your boobs…”

At first, she thought it was a joke. But when she realized it wasn’t, Woo-hui decided to pull a mean prank.

"Shall I show you my boobs?"
“…Do you want to touch it?”

Hiiragi Utena, a girl who loves Magical Girls, lives her ordinary everyday life wishing to be like them.
One day a curious character appears in front of her and offers her the power to make her wishes come true, but…
Magical Girls vs. The Forces of Evil, the fierce battle begins!

That day, Ishida Yamada was working part-time as usual. When he opened the back door after finishing his part-time job, he found a blank space and a person who called himself God. It was by chance that he was chosen by God to go to another world. He was perplexed, but decided to live anyway. Thinking about how to survive in this other world using the skills he received from God, he tries his best to have a physical relationship with a beautiful woman in this other world.

17-year-old Ichirou Satou is an average guy who always happens to find himself in a perverted situation with his teacher, Kana Kojima. Follow this erotic love comedy about their mishaps and how Ichirou and Kana choose to handle them.

The four Golden Times one-shot prequels are included formally as Chapters 1-4 of Nande koko ni sensei ga!? in the Volume 01 Tankobon. The series continuation begins at Chapter 5. Later chapters and volumes follow new student-teacher couples at the same school Ichirou and Kana attend.

Kazuya Kagami never goes anywhere without the precious Sakura Obi his mother gave him. One day a beautiful, kimono-clad girl named Kiriha appeared before him. Kiriha naturally began to live with Kazuya in his room. Then there's Chisato, Kazuya's childhood friend with glasses and a ponytail, who meddles in his affairs. Soon there's also an overprotective older sister who seems to want to take baths with him. Jumble in a huge-chested priestess, a good-looking sorceress named Kokuyoura, beautiful women, and hot girls, and Kazuya's happy, embarrassing, confusing life begins.

Tomoya Sadoshima died after a serious accident after returning to a convenience store. Then,
after regaining consciousness in a pure white world, a woman of divine beauty emerged, she introduces herself as "The Goddess of Creation." The goddess of creation prepared a remedy for her suffering, she offers him to reincarnate a different world than his own. But it was a world in a war situation with the demon king. Begins; a story of Tomoya and his adventure to defeat the demon king and get the harem he so desires

Hiromi Sonoda has no girlfriend, no job, and no home, until he finds a shared-house with very cheap rent and goes to check it out. However, the share-house has a certain condition... Kei Sasuga presents a new "Share House Romantic Comedy"!

The Magician named Yard was suddenly summoned in different world as a Hero. The sorcery in this world is behind compared to Yard who came from another world. The other summoned heroes are also unreliable. Furthermore, it is not possible to return to the former world... In such a hopeless situation, Yard chuckles to himself. Get ready, humans of this world. This world where witchcraft is behind. I have enormous toy in this box. allow me to play with it. The Villainous magician named Yard tramples down the other world with overwhelming Dark magic!

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.

This is the story of a young slave gladiator in an underground arena. He doesn’t know about his past or how he got to where he is, only that his name is Aegir, and that he is strong.

One day he kills the boss and escapes the arena, joining a band of mercenaries as a new recruit. During one mission, they encounter the vampire, Lucy, who slaughters the band with her inhuman strength. After learning that Aegir only knows how to kill, Lucy lets him stay at her house, educating and taking care of him.

Two years pass, and on the day of Aegir’s departure, they both exchange a promise that if Aegir becomes a king and owns the land of Erg forest, he can come and take her as his woman. Making this his life goal, Aegir set out on a journey to become a hero, a king, and found his own kingdom.