Arisue Sei lived as happily as any normal kid would, just him and his mother -- a particularly private woman -- on an outlying island of Okinawa. There were also his friends Toichi and Moichi. The only unusual things about Sei were his sharp instincts and high intelligence. But everything changed when his mother was killed and he was kidnapped by the people of Neo Genesis. Now, six years after the kidnapping, Arisue Sei has returned to Japan with the title of "Doctor" at only the age of 18, and he's not the Sei that his friends remember. There are bodyguards with him who protect him from others who wish to possess his superb intellect. He says he's come back to assist with the research at Rakuhoku University, where Moichi now works, but here is where the door to Sei's secrets just begins to open.

In this heartwarming series, Hana stumbles upon Cafe Requiem, a special place where the spirits of the dead still linger. Each soul has a story, everyone has a final wish. By helping them, Hana finds another side of herself and those around her. Is Hana's special ability to see the dead a curse or a gift?
- TappyToon

Official Translation
Original Webcomic

Inuyashiki has a family, a wife and two kids, none of which care about him. When he learns that he has only three months to live he realizes that the only one who will miss him is his dog. Shortly after this realization he is killed in a crash landing by aliens. He is rebuilt by them as a machine with a human exterior. How will his life change now that he isn't human.

From Kodansha:

Class troublemaker Ryu Yamada is already having a bad day when he stumbles down a staircase along with star student Urara Shiraishi. When he wakes up, he realizes they have switched bodies—and that Ryu has the power to trade places with anyone just by kissing them! After figuring out the workings behind this new and amazing ability, Ryu and Urara take full advantage of the situation to improve their lives. But with such an oddly amazing power, just how long will Ryu and Urara be able to keep their secret under wraps?

Tegami Bachi (or Letter Bees) are couriers that deliver important letters and packages throughout the land of eternal dusk, Amber Ground.

The story revolves around Lag Seeing, a young boy who was born on The Day of Flicker, 12 years ago when the man-made sun went down for unknown reasons. The manga follows his ambition to become a Letter Bee and how he follows the path of his idol Gauche Suede who suddenly went missing one day...

A rising boss in the underworld is forced to lead a double life as a police officer and a gang boss in order to find the killer of his brother.

Completed printed version
Author remade the series at Lezhin

Lezhin Publication

A series of short stories detailing the exploits of Dr Imibe Kana, a researcher on Japanese mythology and religion, as she travels around the country becoming involved in various occurrences centred around ancient traditions and folklore.

From Lucia Rose:
Amane Mikiko, better known as Mikki, is an elementary school student who moves a lot and has to transfer schools often. As soon as she makes friends, she has to painfully say goodbye to them. She is determined to not make any new friends at her new school, but it doesn't exactly go her way. Especially when she meets a boy with the head of a cat! But hold on, he only looks like that in her eyes?

This world had rules. Rules that weren't meant to be broken. If only we had known those rules, everything could have been avoided...

From Hokutonogun.com and HappyScans:

A former professor of archaeology, Hieda Reijiro was expelled from the Japanese Archaeological Association for claiming that youkai exist. Ancient horrors come to life before our eyes as the youkai hunter wanders the land to find proof for his theory.

The included one-shot, "The Living City", won the seventh Tezuka Award in 1974.

For four decades, Golgo 13 has been the world's greatest assassin for hire. Sometimes to settle a private score, and sometimes to change history!

His real name and nationality are unknown but his legend is everywhere. Golgo 13 never fails a job and never sees his clients again. Unless they try to betray him.

Note: Won the 21st Shogakukan Manga Award for general manga in 1976.
Is the bestselling seinen manga as of 2016 with 200 million volumes sold.

From Easy Going Scans:

A tragic young girl whose mother died giving birth to her.

A wicked stepmother and three brothers with whom she shares no blood ties.

Murderous intent born from avarice and twisted emotions.

Secrets woven with betrayal, terror, deceit, love, death and vengeance.

All buried deep within Ayeshah's Forest, shrouded in darkness...

From Easy Going Scans:

In the near future, Mother Nature has decided to fight back against all human encroachment.

The world has entered your standard apocalyptic scenario that you can find in many forms of fiction, but it's right in the middle of the apocalypse actually happening, rather than in the aftermath. Vines and foliage entangle cities, as large wooden mech-like creatures called Arethusa (named after one of the mythical Greek Hesperides that tended the gardens in a remote corner of the world) rampage through cities.

Souma Shin, a punk kid out of Japan, went to visit his brother Ken, but all hell breaks loose as Shin finds a group of small kids being used for military purposes. He tries to save them in the confusion created by an Arethusa invading the compound...

Every Friday, forbidden tales will be revealed.

From Yen Press:
Yuki Nagato, the shy president of the literature club, has never been very sure of herself around other people. But around Kyon, the only boy in the tiny, three-person club, Yuki finds herself faltering even more than usual. For Kyon, and for her precious club, Yuki must find her confidence and let her true personality shine! Enjoy taking a fresh look at your favorite characters in this brand-new story set in the world of The Disappearance of Haruhi Suzumiya.

This manga is about the black cat "Kuro" and the lone girl "Coco" living together in a large mansion. Cute, fun and somehow eerie... Check out this full-color manga full of mysteries!

This is a spin off story that occurs about three years before Spiral. One of the main characters is Imari, who is in love with the kid who wants to be a detective, and which also quit school running after Kiyotaka, and it seems he's dating a murderer without knowing it...? But how is it all connected to the blade children? Not long after, our favorite blade children from Spiral appear for the rescue, all manipulated by Kiyotaka.

The resonating Echo of the sword changes the boy's fear into rage.

A reclusive, disfigured man stalks a pretty, good-natured housewife. One day, he witnesses this woman's daughter being kidnapped.

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