In the year 2040, Japan has advanced technologically to the point of no longer needing people to work. However the cure for some diseases, such as multiple sclerosis, has not been discovered?people who have this disease have to stay cryogenized for 5 years to receive the cure. What was not expected when they woke up, was that they are the only hope for humanity to survive.

World's End Harem After World is the continuation of the story and not a sequel or different series to this, since it didn't end (as you can see with the volume release being 13 and not 1).

A world where cute girls become cards and fight.
And it's terrifying (happy?). In other words, you have to get the other girl to take off her clothes.
Use the girls, who materialize from the cards, and their intelligence and strength to win!
If you win, the other girl card is yours!
A harem is not a dream.
The long-awaited comic book version of this sexy card battle comedy is here!

Did you know there was an organization that is protecting the world from the harm? Its name is Ratatoskr.

Their job is to assist "Spirits", an unknown beings that causes destruction to wherever they go, whether they intend to or not. And they help those "spirits" adjust into normal life.

This is a story of a boy, Itsuka Shidoh, and his daily life, where he was forced into attempts into leading the spirits into his regular ordinary way of life and where they lead... his?

Tsundere heavenly master, big-breasted sister, barefoot poison cultivator, immortal swordswoman with white silk clothes, the last 5 out of the 6 strongest people in the world. I, Ye Gulou have become the first person to cultivate immortality through pure unbounded Yang. But wait, cultivating pure unbounded Yang means I can't form relationships with women or else I'll die?! Then what can I do about this harem of mine that's grown so large over the years? They're all chasing me down, coercing me to choose between them (otherwise they'll kill Me). They've forced me to ascend to the Heavens, to immortality right now to escape from their wrath. Oh shit, they followed me to the new world?!! Let's see what awaits us as my harems from both worlds combine!

Author’s Twitter: https://mobile.twitter.com/bearmaker5

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.

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♪

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!

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.