Ostracized and tormented by his peers to the point of breaking, Kazuhisa Kaya set off into the nearby forest atop the mountain with one purpose: to dig a pitfall and bring about the death of the person behind his suffering. However, right when Kazuhisa was about to succeed in his revenge, a sudden earthquake throws his plans out of whack! Caught unaware, all he can do is patiently lie in wait until someone lumbering across the path happens to fall into his trap. Kazuhisa’s excitement is short-lived, however, as the corpse at the bottom of his pitfall turns out not to be the bully he was expecting but a grotesque, pig-looking monster, and his confusion only grows as he’s suddenly greeted by a pure-white room and a RPG-like status screen.

Strange monsters now wandering the mountain and with newfound powers at his disposal, Kazuhisa is forced to throw all concerns over his tormentor to the wayside as he focuses on a new goal: survival. That’s not going to be as easy as it seems, however, as he’s not the only one to have been wrapped up in this mess…

Distributing thrilling videos in secret. A school game that puts life and death on the line.

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 next door to Fujiwara, an upcoming mangaka, moves Yuuki, who was his teacher back at high-school and first crush? Yuuki, a married woman now is starting a new life in the city but her husband is always away on business so she finds comfort in the company of her former student but what she doesn't realise is that Fujiwara can listen to everything happening in her apartment through the building's thin walls.

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.

Fujinomiya Soujirou is transported to a fantasy world with only his Daisho (pair of samurai swords) in hand. The katana can talk and swiftly informs him that it is Hotarumaru, the legendary national treasure of Japan thought lost during World War II. The wakizashi is to young to have a voice, to Souji names it Sakura. This is the story of Souji and Hotarumaru's journey through a new world as he seeks to achieve ... a sword harem?

High school student Gotou has a crush on his gyaru classmate Agawa. One day after school he sees her having sex with a classmate in an empty classroom. "A 100% pure romcom that starts from NTR."

Masamichi Akita, a high school student whose motto is to live wisely, who meets Setsuna Rikudou, a high school girl with a violent supremacist attitude.

Akita is saved by Rikudou when he is tangled up with a delinquent, and is attracted by her overwhelming strength, asks her to teach him how to fight. However, Akita is devastated by Rikudou, who asserts that “violence is the only rule in this world”.

Akita's encounter with Rikudou leads him into the world of “violence”.

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.

After their first night, her husband departed for an expedition without another word.

He comes back three years later, this time as a famous knight in the whole continent.

How would Maximilian face him on his return?

"The more I think of you, the more lonely and lonely I become. I don't know why I can't quit even though it's so painful."

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.

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!

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.

While on his way home from an interview, unemployed, unmotivated, jaded 18-year-old Inumata Shinogi encounters the beautiful lady and evil spirit Yaergnacht Finsternis. She demands him to either marry her or die on the spot. He must command the battle against enemies of humanity, the apostles of God (Highlanders), and save the world with his wife!!

The story begins with the protagonist, Wakou Ichiro, who decides to return home early from work to celebrate his second anniversary with his wife. But, when he opens the door of his house.... He finds his wife cheating on him! Although the marriage was short-lived, his life changes again when suddenly, a certain woman appears in front of him? Thus begins a new story, a new erotic comedy!

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.

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)

Zarmen, an adventurer who can't level up decides to retire from the adventurer business. Furthermore, in order to graduate from virginity, he decided to splurge on all the assets that I had diligently saved up since his reincarnation at a high-class brothel. The woman who appeared in front of him was the finest woman he would ever have known. Thanks to her hospitality, Zarmen fully enjoys his first time, but at that moment, his ears hear a mysterious announcement, "Impregnation confirmed.", "Level up!" "Does this mean that the more "seeding" you do, the stronger you get?"An extraordinary implantable foreign world adventure fantasy created by a bottom adventurer who has been at level 1 for many years levels up through sex!

Set on a solitary island in the distant sea, a dangerous school life begins!

Kaoru Jahana, a boy who aspires to become a true man, begins his high school life on a solitary island in the sea. There, he meets a charming girl, Kanra, who is actually a demon who feeds on men's spirits...and it turns out that all the women on this island are the same demons!?

“Please teach us naughty things.” One day, Itsuki is transported to another world, where he is confronted by sisters who serve the goddess. In order to return to the real world, he must give them practical sex education!

Shota Iijima picked up erotic books during his childhood and suffers from a severe foreign sister fetish.

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

And Shota is sold as a slave.

A paradise for women and hell for men… Valhalla, the penis mansion.