From MangaHelpers:

Katagiri Yuichi believes that friends are more important than money, but he also knows the hardships of not having enough funds. He works hard to save up in order to go on the high school trip, because he has promised his four best friends that they will all go together. However, after the class's money is all collected, it is stolen! Suspicion falls on two of Yuichi's friends, Sawaragi Shiho and Shibe Makoto.

Soon afterward, the five of them are kidnapped, and wake up in a strange room with a character from a short-lived anime. Apparently, one of them has entered them into a "friendship game" in order to take care of their massive debt. But who was it, and why did they have such a debt? Could they have stolen the money from class to pay for entry into the game? Katagiri and his best friends will have to succeed in psychological games that will test or destroy their faith in one another.

The return of the famous teen detective, Kindaichi Hajime. With his keen intellect and sharp wits, there is no case he cannot solve, in the name of his grandfather!

Searching for her lost father in a fantasy dungeon, master thief Clay meets the dungeon’s caretaker to learn its secrets in this intriguing new manga.

An unexplored dungeon, filled with monsters and traps. An expert thief, searching for her lost father. When Clay delves into the dungeon deeper than any adventurer has ever gone, she is offered a job by the dungeon’s caretaker! Now, instead of exploring, Clay must learn how to interview new monsters, set traps and position slimes around the dungeon. Will this new career path bring her any closer to finding her father?

Ritsu inherited his sixth sense from his grandfather, along with a demon guardian named Blue Storm. Strange things just seem to happen around these two, and it's left to them to get to the bottom of all these mysterious events. Each story is independent but features recurring characters you'll come to know and appreciate as they, each in their own way, try to deal with things 'not of this world'.

Note: Won the Excellence Prize of manga section of Japan Media Arts Festival in 2006.

The urban exploration of two teenagers causes them to run into a mysterious "box", which encloses those infected with a virus called "deadite". In that city, there is a teacher named Katsuragi Zakuro. Which hides a secret...

Vlad, Luke, and Tauryu work in Café Forbidden, a mysterious coffee shop that only opens at night.
The three men look pretty normal, but they hide a secret they cannot share with anyone: every evening, they rush around London to uncover the mysterious incidents that take place in the city.

'Woobin', who uses his good looks to seduce rich women and has lived like trash.

He ends up falling in love with 'Suzy', a chaebol heir who was only supposed to be a target of his seduction.

He experiences the sweetness of love for the first time,

But it lasts only for a while because what's hidden behind Suzy's angel-like appearance begins to slowly choke Woobin.

A romance story of two trash-like humans who can't even be recycled!

This doctor is much closer to death than anyone else! Overwhelming murderous tension. A medical suspense action, which you've never experienced, rises the curtain!

Based on a popular game from Niconico.
Sara Chidouin returns home from school late one night to discover that something's gone terribly wrong.
When she comes to, she finds herself, her friend Joe, and 9 other people trapped in a mysterious place.
Placed in life-and-death situations, they must come to an agreement about what they should do - and who should die.

The story follows Hikari Shirochi, an ordinary high-school boy whose hobbies are games and PC-modding. In the first chapter, mysterious phenomena occur to his body, which conducts static electricity unusually well.

About a guy who reluctantly transforms into a magical girl to fight monsters.

Circa 1937. A Japanese soldier in Manchuria meddling in the opium trade.

After the meteorite "Artemis" collapses on the moon, an unidentified phenomenon affects humans: the "Reproductive system disease". 12 years passed and mankind has done research in the field of cloning and immortality in this world where the birth rate is 0. Meanwhile, Ashiro Koshiro is still seeking the cause of this disease, and suddenly a woman appears and gives him a mysterious suitcase.

The latest work from the "My Dearest Self With Malice Aforethought" duo, a blockbuster crime suspense series that has sold over 1 million copies!

Detective Saeki Jin of the Tomizayama South Police Station receives a report of a burglary and heads for a mansion that stands tall on a mountain. However, as he proceeds with his investigation, he discovers a shocking fact. A shiver runs through the investigators...! A noir suspense of passion and lamentation, depicting a detective confronting a bloody madness, is about to begin!

College student Seiji Kitou and his friends go to an abandoned building as a test of courage, and meet an attractive woman who is a monster that swiftly kills and eats people as soon as she meets them. While trying to escape, Seiji is saved by a mysterious woman with the same ability, Kiri.

Seeing it brings misfortune; defiling it brings a curse? Introducing a new era of strangeness, abandoning seriousness!

On a stormy day, a landslide destroys a fence, and siblings who ventured into a long-prohibited area encounter a terrifyingly bizarre creature...
"I'm a curse god, you know!? Don't you think anything of this grotesque form?!?"
The unflappable siblings, rather than being scared, casually call the creature "Dara-San" and grow fond of it!?

Seemingly scary but not at all! A new era of occult comedy that leaves seriousness behind.

From Kodansha:
When she was still just a girl, Kotoko was kidnapped by yokai. These spirits made her into a powerful intermediary between the spirit and human worlds, but this power came at a price: an eye and a leg. Now, years later, she watches out for dangerous yokai while developing feelings for a young man named Kuro, who is also special: an incident with a yokai has given him healing powers. He's surprised when Kotoko asks him to team up to handle renegade yokai, preserving the thin line between reality and the supernatural.

"You... are going to die tomorrow."

Minadzuki Satsuki, 16 years old. Apart from being antisocial and declaring the death of her classmates, she is a normal high school second-year student. Her nickname is "Liar Satsuki".

However, her eyes alone are abnormal. What she is gazing at is...

Twitter of the author : https://twitter.com/ryo_ichips

In a world entirely ruled by giants, the human race, which has turned into their food, has surrounded its residential zones with immense walls, which both prevent their freedom outside the walls and protect them from incursions. However, as a result of the appearance of supergiants who cross the wall, a desperate struggle begins and the young heroes, who have lost their parents, fight the giant as a training corps, with a view to regaining their freedom.

Note: Won the Kodansha Manga Award in the shōnen category in 2011, was nominated for the 4th annual Manga Taishō award and also for the the 16th and 18th annual Tezuka Osamu Cultural Prize.

After winning the battle of Katze Plains and founding the Sorcerer Kingdom of Ainz, they aim for a utopia of perpetual continuity and prosperity, a world where many races kneel before Ainz. As the first step toward achieving this goal, Ainz heads to the Empire to strengthen the Adventurer’s Guild and incorporate it into the state. Behind the scenes, the nations of the world are beginning to stir with their own agendas for the Sorcerer Kingdom...! Ainz's high road, once again!