Ishidaira is a delinquent who visited the library for the first time since elementary school. But then, he was pointed out by Hayasameru and Shirai, who works at the library, that he has not returned a book that he borrowed ten years ago. A manga about how Ishidaira went from trying to borrow a book from a library to working there instead.

Youichi is a very serious, stoic young man with a girlfriend and a regular sex life. However, he has never experienced sexual self-gratification. Recently, he's become aware of a book called "Masturbation" at the library he works at -- an educated discourse into the history of the sin of Onan and related practices. Finding himself increasingly intrigued by the concepts within, he begins to conduct a series of experiments ... Join him as he embarks into a whole new world!

The revered Swordmaster Hoss sets out to defeat the formidable Shell Dragon! But when people find his cold dead body amidst the remains of a fierce battle, they make a shocking new discovery. Now, with monster hunters discovering new ways to utilize their spoils for more private (?) pleasures, a bizarre sexual hype sweeps through the lands - and Cheong, as innocent as she is, must make her way through this mess. Join Cheong as she embarks on her raunchy new adventure!

A childhood friend and transfer student that's 8 meters tall...?! The start of a literally larger-than-life romcom!

From Yen Press:

Accepted to a high school specializing in the arts, Yuno moves into a nearby apartment complex to make her commute easier. Just a few days into her new routine, she quickly discovers that creativity doesn’t end with the art school bell! Her neighbors — Sae, Hiro, and Miya — are all fellow students, and each has her own hilarious quirks. And eccentricity clearly rules this school; Yuno’s homeroom teach is a cosplay otaku and the principal is just…weird. Will the quiet Yuno be able to handle this creatively kooky cast of characters?

The girl I fell in love with is… an alien!? I, the class president, happened to fall in love with my classmate, the eccentric Haru. I confessed my feelings, but her true identity was an extraterrestrial who came to Earth to survey it. “I still like you!” I started going out with Haru, but I have a further “secret” to keep…

A high school girl reincarnates in another world as Lily. While she occasionally reminisces about her past life, she is now known as "the Maid of the Royal Family," after helping to rear the lady who eventually married the crown prince. One day, the court magician Leonard suddenly requests that she acts as a mother for his adopted daughter Jill.

Oringinal WebComic / Original Web Novel

Due to misunderstandings of the boy, he makes both enemies and allies angry!?

He may be strong, but can't be ignored!!

Supposedly the weakest boy who mastered martial arts and magic, the world shakes his misunderstanding!?

“Hmm... I have no talent.”... is what Yuan grew up in the mountains thinking. He's a normal kind-hearted boy, but of the unusual things about him, is that his parents are a sage and a master martial artist. In other words, the world's strongest. Since Yuan was told he was the weakest, he leaves home to make his dreams come true.

“Eh!? Is it really possible to be defeated with a mere finger-flick by an 8-year-old kid?”

“You heard the hero was the weakest member? You'd have to be out of your mind to fight that!”

“Armies of Angels? You mean the harmful birds? I'll just remove them altogether!”

Now, the boy who sees dragons as just lizards you can eat regularly thinks (I am weak. I'll have to get even stronger or else I'll never become a noble knight), will he ever be free from his misconceptions!?

"In my class, there is a true idol."
A first-year high school student at an ultra-elite school, Hiruno has to be the top student in his class according to his strict mother's order, but when he fails to fill in his first achievement test, he gets a red mark and has to take a remedial class. However, there is another participant in the remedial class...?

In the final showdown between the Demon King and the Hero, the latter used all his power to seal away the former. To exact her revenge on her father's nemesis, the Demon King's daughter, Hel, resurrected the Hero and planned to use him as her personal servant. However, the resurrected Hero is unexpectedly dazzling and dashing, and Hel's composure begins to waver. Will she ever be able to torment her new servant?

Kikuri Hiroi (25 years old). She is a "genius bassist" who leads the indie band "SICK HACK", and she loves alcohol. She often gets drunk and breaks the equipment of the live house, so she seems to be short of money. She lives in a 52-year-old apartment without a bath, and sometimes borrows showers from her friends and acquaintances. She is regularly attacked by anxiety about her future, which she counters with a "happiness spiral" with the help of alcohol. What is her daily life like...?!

The kingdom's mercenary Ordoll, also known as the "War Demon", is feared by enemies and allies alike.
Although he is meant to win every battle, he is "assassinated" the day after a cease-fire agreement with a neighboring country is concluded.
After pretending to be dead, he manages to escape and decides to head home, shaving his beard and shortening his long hair.
Immediately before arriving at the village, Ordoll picks up a five-year-old little girl who calls him her "papa".
The strongest mercenary, who suddenly becomes the father of a 5-year-old child (♀) even though he isn't married, eventually develops into the strongest parent!

Until recently, I had three wishes that I could only hope to come true.
 
‘Please let my missing oldest brother come back.’
‘Please let my Second Brother awaken so he could stop working as a rift porter.’
‘And my youngest brother…As long as he can open his eyes…’
 
There’s nothing I wanted but happiness… was what I thought…!
 
“Keuhk…I’ll only play for 10 years so I can keep the darkness inside me, so work a little harder, youngest!”
My oldest brother spoke as though he were still in his adolescence.
 
“Since hyung is playing for 10 years, I’ll also play for 10 years, too!”
My second brother who returned as an awakener from the future (as he claims to be) said.
 
“You foolish pig, I’ll give you an opportunity to serve this noble soul.”
My Third brother… let’s just move on since it makes my head ache just by thinking about him.
 
“You unemployed parasites! Why can’t you all go out and find jobs?!”
 
Can the future of Lee Bobae, a girl with nothing more to wish for, be full of happiness?

Guy's whole class gets summoned to another word, except he's the only who one was transferred to a different one. Just when he gets used to his new life, he gets summoned to another world again, and again.

One day 's lunch break, suddenly a male high school student Yuzo Ogata being transferred to another world of sword and magic together with four other friends.

According to the Princess of Space-Time Magician, a foreign world who summoned them, they want them to beat the Demon Lord as Heroes to save this world.
Suddenly I was surprised at four friends "Temple", but it was a relaxing expression ... ... where the princess told of a startling fact!
"`―― There should only be four braves though?"
"A man who was mistakenly summoned to a different world" What will be in store as to his fate?

Source: http://konomanga.jp/manga/taitei-cheat

Scrap the boring, run-of-the-mill dating show! Lovers gather together to test the strength of their love. One lover seeks revenge on their swapped lover, one couple seeks fame and another seeks to test their love.
Spicy lover’s revenge set in an ultra-popular hit dating entertainment show!

This is a world where evil creatures are gradually rampaging. However, the evil creatures are strong, they all disappear after this mental hospital, and even without dignity, they are reduced to ingredients and pets. This is the Green Mountain mental hospital, where talents are abundant and strong people are surrounded. In this regard, the seriously ill Lin Fan, who is carrying the system, said: I am definitely not a mental patient, I am a normal person who likes to cultivate. Usually is to touch the socket, climbing high voltage box, thunder days standing on the rooftop to the heavens dance a stick method.

Jiang Chen crossed into the judgment day after the nuclear war, and there was a mess everywhere. In order to survive, Jiang Chen led the refugees to establish a base area and set up a federation. Then carry the judgment day's technology and return to the true world. Change the political structure of the earth, rescue the world in a critical moment, and establish the Great Union of Earth Federation! Expanding the territory and fighting the threat from the sky.

1000 years ago, the MC became a normal zombie in the apocalypse. In order to survive the constant hunting of humans, he continued to train himself until he became immensely powerful. After 1000 years passed, he is now ready to enter human society again.

In his past life, although too weak to protect his home when it counted, out of grave determination Nie Li became the strongest Demon Spiritist and stood at the pinnacle of the martial world. However, he lost his life during the battle with the Sage Emperor and six deity-ranked beasts.

His soul was then brought back to when he was still 13 years old. Although he's the weakest in his class with the lowest talent, having only a red soul realm and a weak one at that, with the aid of the vast knowledge which he accumulated from his previous life, he decided to train faster than anyone could expect. He also decided to help those who died nobly in his previous life to train faster as well.

He aims to protect the city from the coming future of being devastated by demon beasts and the previous fate of ending up destroyed. He aims to protect his lover, friends, family and fellow citizens who died in the beast assault or its aftermath. And he aims to destroy the so-called Sacred family who arrogantly abandoned their duty and betrayed the city in his past life.