A world where the Demon King was defeated by a Hero that came from another world. People carelessly forgot about their fear of the Demon King and of monsters, living in peace.

In a forgotten and run-down cave in the mountains, a new monster that should not have been born was given birth.

The monster’s name was the “Black Ooze”. It was nothing exceptional other than its black color, an ordinary slime.

However, this slime had the special characteristic of being able to take the abilities of the living things it swallowed. It preyed on an insect that had paralytic poison, as well as other animals. Following that, it attacked a human, obtaining his knowledge and Desire.

Before long, the monster established its target as the female mage that came to explore the cave.

This world still wasn’t aware.

A Monster Was Born…

The manga of the popular Light Novel series of the same name: Sisti attends a magical academy to hone her skills in the magical arts, and hopes to solve the mystery of the enigmatic Sky Castle. After the retirement of her favorite teacher, the replacement, Glen, turns out to be a tardy, lazy, seemingly incompetent bastard of an instructor. How was it that Glen was hand-picked by the best magician in the academy!?

From Transcendence:

Ardour is the hottest pop boy band out there. All members, Sheng Ye, A Yao, and Wei, have the looks, skills, and talents that any fans would want. Lian You Yi is a normal 15 years old girl, who does not know about Ardour, even though her father is the manager of Ardour! Due to her father's inability to take care of the band, You Yi is offered to be Ardour’s new manager. You Yi accepts the offer because if she didn't, then her father would be fired! However, what she does not know about are Ardour memeber’s cocky attitudes! How will You Yi manage this band? What will You Yi do in order to keep her father’s job?!?! And will one of the boys show kindness to her, and will romance spark?

"I want my little sister to eat a cake!" Minori, a male college student, decided to work part-time at a super popular cake shop with that in mind. The shop is located inside a school for young ladies!? Can a boy bad at communicating, who can't even look straight in the eye and speak properly run a cake shop with four JK patissiers? Enjoy a teen romantic comedy sweeter than a cake♪

Lewd (wild) sisters will listen to all your troubles ♥

In a world where Takafumi, the hero who defeated the Demon Lord, is worshiped as a god, Scott, a young priest, is assigned to the Church of Karma to spread the religion of Takafumi!

However, there is a problem with this church. The problem is that all the nuns here are… super, super, super naughty!!!!! They were all problematic children that they could not be accepted anywhere else!!!!!! One of the sisters would get totally drunk and cause trouble. Another sister held wild orgies with the villagers. And the third sister was so delusional that she would spread lewd rumors all over the place! Can Brother Scott rebuild the church, which is no longer attracting worshipers because of the strange sisters?!!!!! Or will Scott's rational thought be overwhelmed lust for the sisters first?!!!!

An ecchi fantasy, swirling with lust, set in a church! I'd go to a church like this every day!

From MangaHelpers:
Akutsu Takuma wants nothing more than to be left alone, to live and study in peace. He has a terrifying face, which has prevented him from making friends and earned him the nickname "Akuma" (devil). However, he is satisfied with being alone and spending all of his time learning, hoping to become the good person his late mother saw in him.
All of this changes when he gets involved with the nine Saotome girls, who are Valkyries. Takuma is called by Odin to pair with them to protect the world from demons and the threat of total destruction. The Valkyries' power comes from love, and so now he must live with them and try to become closer to them. To start with, they prioritize his intimacy with the strongest Valkyrie, Natsuki. Will he and the Saotome women be able to save the world?

Tens of thousands of big shots submit at his feet yet he says, “I’m really just a mortal...”
The overpowered protagonist who’s simultaneously the weakest in the world.

Wataru Sajou , who is deeply in love with his beautiful classmate Aika Natsukawa, is continuing to approach her without getting discouraged while having dreams about their mutual love.
However one day he woke up thinking, “I am not really fit to be together with someone as good as her, huh…” Upon realizing this, Wataru started keeping an appropriate distance towards her, much to Aika’s surprise. “Could it be that he hates me now…?”
Did his intentions slip by her because she was getting impatient after arriving at the wrong conclusion!?
This is the start of a romcom revolving around two people who just cant get their feelings across and both think their love is unrequited!

Due to a false charge, Felicia Suwarose got her engagement with His Highness annulled and was expelled from school. There’s nothing but misunderstandings all around her, but the person herself only wants a rose-coloured commoner’s life. It’s a story about characters from “Nation’s Saviour Lady Rose”, an otome game from her previous life.

Konoe Yuuto was summoned to a different world where slave trading is legal. There, using his "Skill Taker" cheat ability, he steals the abilities of monsters he defeats, and starts building a slave harem while hoping to live a carefree life after retirement.

From MangaHelpers:
This manga is related to the "Date A Live" novel and anime. It features members of the AST (AntiSpirit Team), a special squad devoted to fighting spirits. Okamine Mikie idolizes her superior AST member, Tobiichi Origami, and may be in love with her as well. Unfortunately, Origami seems to want nothing to do with her. One day, they end up heading toward an explosion that wasn't caused by a spirit. Instead, it was caused by a girl named Ashley Sinclair, who transfers to their school shortly after the incident!

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

Oliver, an adventurer almost in his 40's received a certain mission in regard of his earnest personality. That mission is to bind a contact with fellow deredere little in spirits who have great power or something like that!?

Thus, the fellow spirits gathered and the new life of Oliver as school principal begins--!!

- Summary from Gardo Comics

Spin-off Comic from "The World of Otome Games is Tough for Mobs" Starts! A kindergartener mob life comedy! Even when they're tiny, they're still female chauvinists!

Ding, the host has opened the invincible field! As long as the host is invincible in the field…!” As a nerd, Chen Changan travels through the fantasy world, facing countless monsters and ghosts from the outside world, Chen Changan decided not to leave his invincible field before becoming immortal. When he is bored, he occasionally raises a few cute and sweet apprentices, and accidentally cultivated them to become leaders in the spiritual world, which turned the world upside down.

Meet the adventuring school's highest honour student, Touru. Once he got to study abroad, he had a reunion with his childhood friend Nikka. However, what he thought was a girl as human as he was, she was actually a giant of the ogre lineage! Everything is mega-sized in this city of giants. His childhood friend is 100cm taller than him. Somehow his classmates are only girls. Even though he doesn't mean to, miniskirts flutter all around him. Brandish your sword and sorcery in this school-life harem story!!

20 years ago, Weve Aliens arrived at Earth to search for marriage partners. Weve are perverted and love interbreeding. With their advanced technology, they have solved all the Earth's problems to do with the environment, food, and resources.

Gen is a student at the prestigious Human-Weve school Shinryou Academy. Due to his late grandfather's words, he loathes Weve and believes that pure humans will eventually die out if something isn't done about Weves soon. However, Gen meets the Weve girl Mirika, who falls in love with him.

A world where God will grant abilities called Skills to those who come of age. The protagonist, bestowed with two skills, uses them and rises to an existence called a hero.

A prestigious school where only girls can attend-Winebirds Royal Magic Academy. A boy visited there. His name is Noah.

It was called as the first male student to co-educate the school.
Then, he started living together with a problematic beautiful girl, Anya.

However, his pure smile and non-pure tentacles created various ripples in the school...!!!

The Arisaka sisters (Hatsune and Kazuki) and the Kagura siblings (Yuuji and Marie) lived next door when they were smaller. So close that they could climb onto each other's verandas from the 2nd floor. They would always play together until one day the Kagura siblings had to move.
It's been 10 years and the Kagura siblings are moving back! Yuuji's turned into a pervert and Marie isn't the crybaby she used to be?