The Yoshinomiya Municipal High School 2nd year students embarked on what they'd hoped was an educational trip with their friends and away from family but it was not meant to be... Their ship was hit by unexpected rough seas and crashed on a strange island! The surviving students are trying to understand what happened but soon they realize they are not alone on this island and the locals don't appear to be very friendly to strangers!!!

The manga centers on a “twisted” relationship.

Picking up directly after the events of 20th Century Boys, it seems like the world is finally out of danger, but the mystery of "Friend" still exists. As the world is threatened again, Kenji must search his memories for any clue about "Friend."

Note: 20th Century Boys and 21st Century Boys' combined storyline won the Grand Prize at the 37th Japan Cartoonist Awards on May 9, 2008.

The geniuses and eminent figures that have left their names across history tend to have special fetishes. By taking this anecdotal evidence and turning it around, a class of students with special fetishes was created with the purpose of raising geniuses. Seijun Private Academy class 2-9, also known as the Special Idiosyncrasy Class. White bitch gals, peeping toms, perverted inventors, extreme masochists, exhibitionists…… Itou Manami, a fledgling virgin teacher has been put in charge of this class. Will he be able to fulfill his responsibilities as a teacher against these students and their special interests!?

When people die, they end up in the Ministry of Death, where they must fill out the necessary forms (the paperwork doesn't end at death!) to be able to ascend to heaven. Depending on the lives these people lived though, their application may not be approved by the employees of the Ministry of Death, and they may be sentenced to hell instead! Follow the daily lives of the employees as they judge and assist the dead in the afterlife.

Makoto Kubota wandered through life, not taking things too seriously or looking too deep within himself. His job as the head of the Izumo Group's youth gang kept him pleasantly occupied with yakuza wars, mahjong and assassinations... Until the day he stumbled upon a strange drug called Wild Adapter that produces bizarre side-effects--including death. Forever changed, Kubota becomes entangled with a drifter named Minoru Tokito, and the two form an unlikely companionship that draws them deeper into the mystery of Wild Adapter...

The setting of Fate/Apocrypha is a parallel world to Fate/stay night where the Greater Grail was removed from Fuyuki after the Third Holy Grail War and disappeared for many years. Around the 2000s, around the same time as the Fifth Holy Grail War would have happened, the group that plundered the Grail, Yggdmillennia, openly declares their secession from the Mage's Association and that they are in possession of the Grail. The Association dispatches fifty magi to retrieve it, but all but one are instantly slaughtered by Lancer of Black. The one remaining manages to activate the reserve system of the Greater Grail, allowing for the summoning of fourteen Servants in total.

Story of a buxom and no-nonsense crime-fighting mentalist.

A group of employees from the Fujitani Pharmaceutical Company are on a hiking trip. After the company suffered a crisis, the CEO hopes to improve teamwork and morale among new and old employees with this trip. Not everyone is as excited as he is. Unfortunately for them, they soon find themselves having to deal with problems that they weren't prepared for.

What's going to happen to these employees? Will they fall in love with hiking? Will they be able to work together, get along well, and bring the company back to its feet? Read and find out in this heartwarming story of adventure, friendship, and teamwork.

Teenage magician Kaito Kuroba has a secret identity: that of Kaitou KID, a famous internationally-known and wanted "phantom thief". Kaito took the identity after one day discovering that his late father was the original Kaitou KID. Later on, he discovers his father, who died from an 'accident' during a magic trick, was really murdered because he would not steal the jewel Pandora for an evil organization. As Kaitou KID, Kaito tries to find Pandora before that organization that killed his father do, and destroy it, leading Inspector Nakamori and his task force on the wildest jewel heists imaginable!

Harusawa Hinata, who works as a web designer, receives a call that the body of his best friend Sora Otonashi, who disappeared in his second year of high school, has been found.
He attends the wake with his friends from the art club, where Shinohara notices something when he sees a picture Sora drew just before his disappearance....
However, Shinohara and Hinata are attacked by someone.
When they wake up, they find themselves in "that place" on "that day"!
What is the truth behind their best friend's disappearance and death?　And what is the secret hidden in the picture Sora drew?

In the distant future, a new immortal and genderless life form called Gems populate the Earth. The 28 Gems must fight against the Moon Dwellers, who attack them regularly to abduct them and to turn them into decorations. Each Gem is assigned a role, such as a fighter or a medic.

Being only 300 years old, Phosphophyllite is the youngest of the Gems and has no assignment yet. Phos to help to fight the Moon Dwellers, but is too weak and brittle for battle. One day the master of Gems, Adamantine, assigns Phos the task of creating a natural history encyclopedia.

Nominated for the 8th Manga Taisho in 2015.

From Tokyopop:

Kantarou, a folklore scholar living in the Taisho period, has various and sundry adventures. But Kantarou moonlights as an exorcist solving the problems of ghosts and demons, all with the help of Haruka, the legendary demon-eating tengu!

Note: The serialization was in a shoujo magazine: Comic Blade Avarus.

The light is gone. Unable to escape the darkness, Pieta repeats the same day. Every day she walks to school down the same road, through the same rain, then talks with her friend Danae. Eventually, she finds happiness in the repetition. The days carry on as normal, until one day, her routine chat with Danae takes a different turn: "What?! You can remember the today that happened yesterday too?" Despite their bleak situation, the girls reach towards tomorrow!

The story follows 6 contestant participating in an all-out battle to become the Talisman as a new turning point in their lives.
However is it only a matter of time before their past catches up with them?

In the year 20XX.

Despite the fact that the citizens are monitored by IC chips, making the identification and arrest of criminals easier, gruesome murder cases targeting children by an unidentified serial killer are occurring all over the country.

Clad in a black cloak and a clown mask, a deranged serial killer known as the 'Murderous Clown' who poses 'questions' to his victims — the battle between him and the police officer, Yuuto Asakura, begins!

Chakuro is the 14-year-old archivist of the Mud Whale, a nigh-utopian island that floats across the surface of an endless sea of sand. Nine in ten of the inhabitants of the Mud Whale have been blessed and cursed with the ability to use saimia, special powers that doom them to an early death.
Chakuro and his friends have stumbled across other islands, but they have never met, seen, or even heard of a human who wasn't from their own. One day, Chakuro visits an island as large as the Mud Whale and meets a girl who will change his destiny.

Note: Nominated for the Tezuka Osamu Cultural Prize in 2017.

Strange things are happening all over town, and Amano Kouichi's having nightmares again. Several clans are spurred into action as the past gradually resurfaces, while Kouchi and his obsessively devoted younger brother Jun keep having inexplicable encounters that those around them seem to know more about than they're letting on.

What, exactly, is being set into motion, and how do the Amano brothers fit into the picture?

7 years ago a strange disaster occurred in the 24th ward when laws of reality were distorted in that area. Our main character is a high school boy who lost his little brother. Can Hanako-san from his school help him find his sibling again?

But more importantly who is this Hanako-san of the 24th ward?

On her 12th birthday, Angele is infected with the strange and fatal disease that causes feathers to sprout from the body. She is sent to a solitary institution to be quarantined where she meets a man named Hakana and the wheels of fate begin to turn. (Source: Mangaupdates)
Based on the free game from Niconico.
Play the game in Japanese: https://game.nicovideo.jp/atsumaru/games/gm4581
Watch a playthrough with everything narrated: https://www.youtube.com/watch?v=wFmcgB3bikM