From Webtoon Live and Shiro Nabi: "Welcome to Survival, 'I Am Unhappy,' the exciting game show to find the world's unhappiest person! The grand prize... is a wish granted by God!" When the victor of the game show wishes for the end of the world, God accepts this wish with a set condition: the world's end would proceed over the course of 100 days, and during that time, he is allowed to 'change his mind' only once. Oh Duk Hee, a quirky comic artist who specializes in unhappiness, is chosen by God to to make the unhappiest person on Earth happy again. With the pressure of mankind's destruction riding on her shoulders, will she be able to change his mind before it's too late? The competition to choose the world's unhappiest human?! The hybrid school fantasy action story by Jung Pil Won!

A collection of slightly odd oneshots with a focus on female sexuality.

Story 3, Under the Mantle: A girl is unhappy with her boyfriend who doesn’t seem to care about her.
Story 4, Pandora: A strange encounter in an elevator.

A period drama set in 17th century Japan ten years after the Battle of Sekigahara, Gaiakitan tells the tale of of Sanada Yukimura assembling his team of ninja, the "Sanada Ten Braves." The story follows a mysterious and talented ninja, Kirigakure, who is reluctantly drawn into Yukimura's rebellion against the Tokugawa clan.

From Anime News Network:

The first Legal Drug series went on hiatus in 2003. Drug & Drop will again follow the lead characters Kazahaya Kudou and Rikuou Himura. The new manga will reveal Kazahaya and Rikuou's pasts as well as the background of Green Drug, the mysterious drugstore where they work.

An innocent sightseeing trip to Kyoto opens up a magical realm to shy high schooler Chikahito Takamoto. Visiting a legendary shrine, Chikahito finds himself in the mystical world of Hana and her comrades—and his immunity to their powers leads them to believe that he’s no ordinary awkward teenager! Protecting our world from violent elemental beasts, Hana and her team welcome the confused Chikahito—who isn’t quite sure that he wants to be caught in the middle of their war! One thing’s certain, though: since he’s smitten with aloof, childlike warrior Hana, he’s along for the ride, for better or worse!

Daisuu is a manhua artist who has been grew up in a nursing home. He lives a lonely and boring life everyday without any interactions with others. One day, mysterious Myou, who has cat ears, appears and changed Daisuu's life. Even though Myou always causes trouble, Daisuu's heart is filled with warmth that he never experience in his lonely life. This is an everyday comical life between Myou and Daisuu, as well as revealing mystery revolving Myou gradually.

Count D has opened his petshop again, this time in Tokyo's Shinjuku!

For those who haven't read Petshop of Horrors, Count D's Petshop is a place where one can find animals from the most ordinary housepets to savage predators to mystical beasts that should belong only in legends. Customers often find that their new pets change their lives more than they expect, fulfilling their dreams, or realizing their nightmares.

High school student Saika has psychic abilities, and is constantly tormented by people's thoughts. However, after he makes a friend, who happens to be in love with him, he finds it's not all that bad.

A spin-off comic based on the movie Sadako has appeared! Sadako, who doesn’t get to appear much in the film, was actually doing this and that?! Witness a short comedy from Sadako’s perspective! You may see a side of Sadako you’ve never seen before… ?

The story of a bird tengu with a soft spot for Kuro, a black dog he picked up one rainy day. But Kuro's true nature is that of a dog tengu, a harbinger of calamity.

"I'll bring you misfortune."
"So what? Stay with me, Kuro."

In his human form, Kuro can't hold himself back when faced with the sweet fragrance of the bird tengu he loves. And so they share their first time and first heats with each other. They won't stop until they're satisfied.

An advertising company's newcomer, Adashino Ayano, is a zombie girl. A little strange girl who often trips, loses hands, feet and eyeballs, and loves zombie jokes. Dullahan salesman, vampire chairman, clerk with zombie mania; surrounded by distinctive members, Adashino will work hard today!

The highschooler Keita Yatsuhaka has a crush on Manami Yotsuya, his schoolmate. They used to be good friends, but they've grown distant. One day, Yatsuhaka's friend, Kikka Kasanegafuchi, tells his fortune.

"There will be death if you don't confess to her within the week...!?"

Follow where his love takes him in this Supernatural Love Comedy!

A slit-mouth woman encounters a young boy she's unable to scare.

The "Seven Deadly Sins", a group of evil knights who conspired to overthrow the kingdom of Britannia, were said to have been eradicated by the Holy Knights, although some claim that they still live.

Ten years later, the Holy Knights have staged a Coup d'état and assassinated the king, becoming the new, tyrannical rulers of the kingdom.

Elizabeth, the king's daughter, sets out on a journey to find the "Seven Deadly Sins", and to enlist their help in taking back the kingdom.

Nominated for the 7th annual Manga Taishou Award. Won the Kodansha Manga Award for Shounen in 2015 (tied with Yowamushi Pedal).

The protagonist is a girl with the ability to visit a surreal alternate dimension full of monsters in her dreams. One day, she encounters another human girl there and receives a plea for help.

From Tokyopop:
Chun Hyang is the feisty young daughter of the village shaman and a master of the martial arts. When a tyrannical warlord threatens harmony in her village and abducts one of her friends, Chun Hyang vows revenge and sets off on an adventure that would become a legend.

While humans toil at their ordinary, boring lives, a battle secretly begins among a new species that evolved from humans. They disguise themselves as human children, and instead of maturing into adults, they are each gifted with a different "special power". They are the new humans, known as "Kodomo." Hinagata Heiji is a Kodomo who can bring any inanimate object to life by dripping his blood on it. In order to find his own feeding ground, he keeps transferring to new elementary schools.

Even if he forgets, I will remember

Satoru earned a name as a genius boy detective, and the police rely on his reasoning skills. His secret, though, is that he is able to see the ghosts of the dead, and they provide him with the hints that lead him to solving cases.

Now that he's a teenager, he has attracted a strange 'ghost' named Kako, who claims that she is actually a god. She goads him into taking more mysterious cases, in the search for a vengeful spirit that wants to kill humans.

Now they are a team... where he solves the cases and she purifies the vengeful spirits!

In a world where people and Shinkis (Ogre spirits) normally coexist, a high school student named Kei who’s currently living with his aunt is someone who hates Shinkis and he has been hiding his shinki inside him throughout his life. However, he was caught up in a big trouble that caused his Shinki to get out!