Welcome to the academy of Demons and Dungeons!

Kodo Ikusei Senior High School, a leading prestigious school with state-of-the-art facilities where nearly 100% of students go on to university or find employment. The students there have the freedom to wear any hairstyle and bring any personal effects they desire. Kodo Ikusei is a paradise-like school, but the truth is that only the most superior of students receive favorable treatment.
The protagonist Kiyotaka Ayanokoji is a student of D-class, which is where the school dumps its "inferior" students in order to ridicule them. For a certain reason, Kiyotaka was careless on his entrance examination, and was put in D-class. After meeting Suzune Horikita and Kikyo Kushida, two other students in his class, Kiyotaka's situation begins to change.

Mochizuki General Hospital boasts some of the most well-trained (and well-endowed) nurses in town. But though these ladies spend much of their day battling disease, their after-hours are spent fighting a very different sort of disease…Under the leadership of the hospital chairman, a handful of staff members and local teenagers form a group of mercenary assassins, targeting the “cancers” of society and excising those individuals before their wickedness spreads.
(Source: Yen Press)

Saphate is the second son of the Greed noble family.
He hates the way his clan squeezes the money from the population and the way it wastes it and when he went to oppose his family's way of act, he's kicked out.
Although he lost his job at the Magic Academy and become a wanderer, he managed to live normally with his former elf colleague and a cat maid that worked for his family and that left her work for following him...

This is a story that narrates his everyday life.

From Transcendence
Azusa, a normal high school girl, fell down the stairs while visiting her grandmother in the hospital two months ago. When she awoke, she was surrounded by people speaking of "The Priestess of the Dragon God," "The Imperial Capital," and "The Taisho (Era)."
The legend starts again with this work, commemorating the 15th anniversary of the Haruka series!

Nagumi Koushi is a 12-year-old boy who was abandoned by his broke father after their house caught on fire, leaving him to roam the streets penniless. Then one day, a girl named Minerva who finds him lying on the sidewalk takes him to a women’s college dormitory, one known for housing troublesome residents, and asks him to be their "Dormitory Mother." Surrounded by older women and forced to deal with their idiosyncrasies, Koushi starts his new (somewhat ecchi) life!

The spring fountain town of miracle that heals anything, Polka. In the hometown of memories, with my dear parents, there was a figure of a half-elf girl who swore to become my female slave.

Repeating such a memorable talk every time he drinks alcohol, 25 years old Andy Smeyson is a former blacksmith’s apprentice and an innocent crossbow soldier. Andy is surrounded by nice companions and competent and sexy bosses, which is different from what he had thought when he was a child, but this was a cozy life. When the half-elf girl suddenly appeared in front of him, he will jump into a furious destiny. Andy, who is weak but courageous​ and clever will meet a lot of different race ladies such as elves, half elves, dark elves, loli dwarves, dragon girls, beast girls and make them his female slaves one after another. The horny adventure started from a half elf girl who doesn’t stop liking him will eventually become a legend.

Exploring undeveloped unexplored regions from scratch! Creating and building a city with plant magic!
The boy Elt, who reincarnated as an aristocrat, was branded as incompetent and was thrown out as a manager of a remote area with zero territories.
However, his "plant magic" was the best all-purpose magic for territorial development! As
he cultivated by utilizing the magic that produces from crops to buildings and the knowledge of the previous life , the number of territories increased and became lively.
Moreover, the territory that should have nothing is actually a treasure trove.
A pioneering record of a different world, the opening of comicalization!

A college student buys a new apartment dirt cheap and the reason was that once the front door is opened from the inside it connect to a dungeon in another world instead so he goes to an adventure in the dungeon and meet new companions which treat him as a the Great Sage

All the Ore no Sora series deal with the Yasuda family. The first two series are about Yasuda Ippei. This is a Otoko Roman Manga and the genre is about Japanese men fantasizing about being successful in the world.

Rokudou is a loser, and everyone knows it. He gets picked on at school, gets snide looks from passersby, and can only muster up the courage to complain in secret with his equally hapless friends. Looking to turn his life around, he desperately uses an ancestral artifact passed down in his family for generations: a scroll that is capable of subduing all demons. However, in the modern age it has a different effect - it makes all bad girls fall in love with him.

An exterminator dies and finds himself in a fantasy world, without any skill with the sword or wand he carries on doing what he knows best.

Accidentally summoned by an ancient map, first year high school student, Kiyokawa Hiroto is forced by the arrogant Lord of the castle to exterminate the vampire that has been haunting his castle. Unexpectedly befriending a girl from Mummy tribe, Hiroto skillfully managed to capture the Vampire with her help. However, he is soon framed by the Lord of the castle. Bravely and kindly aiming to be a Lord, the fantasy of summoned to another world starts!

Ashida Mamoru is a god-tier manga assistant but his habit of turning authors lazy has left him without a job. Luckily one of his classmates from university happens to have a little sister who is a serialised manga author in need of an assistant.

University graduate Mu Siyun sent his resume to the star fleet on a whim and somehow became the Fleet Admiral! This is the story about an admiral with a harem of 3000 female soldiers conquering the universe.

Izumo Kunisaki, a descendant of Izumo no Okuni, is often mistaken for a girl. It is the bane of his existence. His father and best-friend often laugh about it. To top it off, he plays the girl roles in his family's Kabuki troupe. In this short, he discovers that that curse is also his greatest source of strength and will prove just how much of a man he is.

From MangaHelpers:
Hana, a high-schooler that is known as the cutest girl in school, gets pulled into a supernatural event while on a beach trip with her friends. This event, called a "Red Night Eve" involves a transformed extremely massive shark, which targets Hana while she's swimming! Luckily, she's rescued by the siblings Yayako and Yuuto Kagimori, students from her school who know all about these occurrences, and who even have a support program AI named Acacia in their tablet to help them. Not long after, Hana and the siblings are involved in another event, this time involving her precious class pet parakeet being transformed into something monstrous. With all these supernatural events, Hana's life is never going to be the same.

Keita Suminoe has two older (not blood-related) twin step-sisters who love him in a lustful way and have no problems expressing it. They even like to compete about it; much to the laughter of his friends (which he usually endures without problems). One day they come to his school to give him his lunch, resulting in him getting angry due to the atmosphere. To counteract his anger, they confess their tender feelings for him in front of everyone and leave. Feeling sorry he chases after them and says that he'll study hard in order to get in the same high school as them.

Takase is almost opposite of his brother weak and not good at school. He recently moved in at his brother's house, who is a married guy. He is placed under an exceptional coach to improve his physical health, and the coach also know as 'Venus of track' is none other than his sister in law. She is developing a new technique to improve body at a faster rate by management of testosterone levels in the body, in other words sexual desire management. She calls it 'absolutel obedience.' And Takase have to go under it to improve himself. This changes his life drastically, read and find out more.

The life of two slaves with their timid hero level master.