Cheon Haesun is the protagonist who‘s terminally ill because of various poisons. Cheon Haesun, who was never welcome anywhere, will have his story of becoming the strongest hunter play out on an Earth upon which dungeons and monsters have broken out!

Short comics from the official Arknights manga anthologies, based off the game of the same name.

A hikikomori gets texted 'help me' from an anonymous source. Feelings of heroism coax him to the outside world which and he finds has been badly damaged, with broken houses and bits of debris everywhere. He searches for survivors but all he finds are corpses and ghosts till he gets to his sister's body.The guy has esp so he converses with her ghost and she tags along in his attempt to find more survivors. Eventually they do find someone that casts a shadow, but they may not be as human as they seem.

A manga about the newly resurrected demon lord who wants a rematch against the legendary hero but finds him in a sorry state and living out of a one room apartment.

The story focuses on the 16-year-old protagonist, Akira Kurusu, who got transferred to Shujin High School in Tokyo after he was sued by a man with political connection for a non-existent violence when Akira saved a woman from being molested by the man, leading to his probation. Arriving in Tokyo, he finds a mysterious app got installed into his phone that enables him to enter another world formed from corrupt hearts of adults where he awakens his power called Persona. During his times there, he is joined by two fellow students Ryuuji Nakamoto and Anne Takamaki, and a shape-shifting cat-like creature known as Morgana. Feeling suppressed by their environment, the four form a group known as the "Phantom Thieves of Heart" to steal corrupt hearts of adults and reform society.

Everyone has a talent of their own. And the talent I have is ‘eating’.

A talent that shines much brighter in this world where countless powerful organisms dwell.

Feast.

Devour.

Consume the blood and flesh of the strong and make that yours. Even if it’s a dragon, a demon king, or a god!

Richard, the ambitious third son of the House of York, believes he is cursed, damned from birth to eternal darkness. But is it truly fate that sets him on the path to personal destruction? Or his own tormented longings? Based on an early draft of Shakespeare’s Richard III, Aya Kanno’s dark fantasy finds the man who could be king standing between worlds, between classes, between good and evil.

During the political upheavals and social strife at the end of the Tokugawa Shogunate in Japan (1855), two parent-less brothers Yukimura Shoutarou and Yukimura Gentarou struggle to survive in these turbulent times. With their only possession being their deceased father's sword and clinging onto the wisdom of their mother's final words, the brothers seek to embark on the Path of the Warrior: Sidooh.

Hiroshi Shinanogawa is a teenager who loves reading mangas about delinquents. He wants to be bad-ass like the delinquents in his favorite comics: "Be-Bop-Highschool", "Rokudenashi BLUES," "Shonan Bakusozoku," "Crows" and "WORST."

In the last summer of his middle-school life, he decides to become a delinquent. He leaves his prestigious private school and "drops out" to start leading a life as a delinquent. Now he is a member of the gang that rules Komae Kita Middle School, hiding the fact that he is an amateur at being a delinquent. He stays and fights together with Iguchi Tatsuya, a leader of a gang and a delinquent who Hiroshi aims to be like.

The witch Vivian is dying, and she asks her apprentice Betty to prepare the only medicine who can save her. But to get a hand on the ingredients it's not going to be a piece of cake... because one of them is the horn of the demon king Kinguburu, and defeating him can be a matter of life and death.

Rindo Kurosawa is a man who loves horror films and aims to become "king of cinema", the top of the filming world with horror films. One day, he receives a master tape from Robert Skye, a master of the horror film's world whom he deeply admires. However, this is the beginning of a strange fate for Rindo, as Skye's unfinished work "Axeman" appears from the recording...! In order to realize his ambition, Rindo throws himself into a deadly battle with the "Kinema" who lurk behind the scenes of the film industry...

'Oh Ju-Yoon' is your typical, everyday part-timer. He dies to a coincidental accident, but because of his kindness, he is given another chance to live in a new and different world. However, his future is neither as a hero, nor mage... but a creature at the bottom of the food chain, 'Brick Eater', meeting an atrocious crisis?! Surreal events! An unexpected level up fantasy!

Delinquent girl, Reina, makes ghosts fuck off.

From MangaHelpers:
This is another story in the Full Metal Panic universe, set ten years after the events with Sousuke and Kaname. Ichinose Tatsuya is a pretty normal high school boy, who lives with his father and little sister Yukari. He has a tendency to fall in love with foreign women, which has never turned out well for him. One day, while up in the mountains driving a Power Slave to help out with his father's company, he runs into yet another beautiful foreign woman, called Adelina. He lends her a hand and is surprised to see that she has a military Arm Slave, called "Shadow," with her. What is this mysterious and highly armed woman doing up in the mountains? Tatsuya's life is about to get a lot more exciting.

A boy born from this world alongside the summoners from Japan... They will challenge the max-difficulty dungeon!

God created a labyrinth, which people challenge with guns, swords, and magic in an RPG-like world. Summoners from many other worlds participate in this massive battle! The locally born hunter Shun quickly rises to prominence as he plays the game!! Then, he meets the twins Yua and Yuna, who have been summoned from Japan...

Haruo is a boy with three younger sisters and a parent-less home. Although he does not know, his sisters all know magic. Now, they hire a maid who is also a new transfer student. She also turns out to know magic...

A Hero is someone chosen by God to receive a supernatural 'gift'. A unique existence, only one Hero can exist at a time, with a new one being chosen upon the former's death.
This generation's Hero is an ordinary villager girl named Kyrie whose gift is merely being able to boil water.
When her family and friends are slaughtered, Kyrie is backed into a corner and learns the true value of that boiling hot power, and how well it could be used to fan the flames of revenge that burned inside of her.

Typical company employee Tanaka Daichi (38 years old, single) loves games and plays a new type of VRMMO called "One More Free Life Online" under the username "Earth". Inside this free world he chose several skills that are generally regarded as useless. Be it wasting time crafting potions, cooking up pointlessly tasty food, or hunting monsters with some absurd weapon he crafted, he simply enjoys playing the game.

Web Manga

"You want me to become the hero’s experience points and loot? With pleasure!!!"

A hero who bravely ventures forth to defeat evil, and a monster (named El) whose sole life goal is to be killed by said hero... is finally confronted by the hero's party after dreaming about a comfortable afterlife for so long!

But... the hero is way too weak! Everyone except one was wiped out by El’s attack. When his dreams of happily retiring in the afterlife are about to be shattered, Laphie from the hero’s party says out of desperation: “I'm with child!!!”

So El comes to a realization spurred by Laphie's statement: “if the hero who was supposed to kill me isn’t here... then I'll raise one myself!”

Now, with El (the Lieutenant-General of the demon army who knows nothing about raising a child), Laphie (the inexperienced mother), and Dino (the cutest baby hero), their "ordinary," child-raising fantasy story unfolds!

Here comes the world’s most unpredictable family!

"Majo Allied", a country of monsters who live in humans. In order to defeat the strongest monster "Demon King" that reigns there, many heroes appeared and disappeared ephemeral. And now another hero stands up!! But that hero was... a little girl?! The legendary battle for the survival of humanity begins... maybe?!