The setting is a certain kingdom. In order to save the kidnapped princess of the kingdom, the Kingsguard squadron challenges the "Dragon Tower," a gigantic structure floating in the middle of the sky, but they are blocked by powerful demons.
A provocation is made by a neighboring village to replenish the injured personnel, and when a young man is sent to the tower, the wheel of fate begins to turn.

Tale of sword & sorcery and labyrinth exploration begins!

The 200,000 KM diameter artificial celestial body of APOSIMZ. Most of its volume is its core space, which is covered by a superstructural shell. Fifty centuries ago, the people who lost a war against the core lost their right to reside legitimately in APOSIMZ, and were left behind on the extremely cold surface. They face the spreading Frame disease. And aggressive automatons which appear frequently on the ruins level. Even so, somehow people survive.

A short oneshot about a man looking for his brother.

[From Kotonoha]: While it’s not explicitly mentioned in the story, it’s believed that Suzumega is at least somewhat related to Abara since it features the Gaunas.

A bloody war that spans millenniums. Two soldiers set out to kill each other. An encounter that could change their two species’ fate forever.

From Tokyopop: As detective Musubi Susono investigates a series of child kidnappings, her own partner is viciously murdered. But when the investigation takes a brutal turn, she is suddenly confronted by the killer--and his vicious Silicon Creature...

A short story about a man coming across a girl with fairy-like wings whose right arm is trapped in a hole.

First issue of a canceled series; collected (in thumbnails) in Blame and So on (Artbook)

The much-awaited sequel to BLAME! follows a man, called a Dismantler, who is in charge of sub-dividing the nexus towers that incurr Safeguard interference upon its detection of humans without the net terminal genes. Although humans are once again able to reside in the Net sphere, the Safeguard are still a threat. The Dismantler or NSE, or Net sphere engineer, goes on a journey to aid mankind in their survival. NOTE: This oneshot is actually chapter 6 of Blame Gakuen! and So On

The protagonist is a descendant of Pcell. This story happens a long time after the events of Blame!. This young silicon creature knows well the havoc that Killy brought and decides to move towards the end of the megastructure, to look for him. NOTE: This oneshot is actually chapter 8 of Blame Gakuen! and So On

Abara is set in a dystopian world, filled with large structures. The story revolves around creatures known as Gaunas, those who can shape bone like armor and weaponry around themselves by transforming. The transformation begins around the spine and then shapes layered armor.

The story focuses on one such Gauna known as Kudou Denji, though he uses Itou Denji as a fake name early on.

Abara means "ribs" in Japanese.

Volume 2 contains Digimortal
A mercenary in cyber-armor battles a repressive cyborg regime.

Tsutomu Nihei returns with another addictive manga (see BLAME!), set in the not-so-distant future (3005 A.D.). It follows a character by the name of Kanoe Zouichi and the mysterious Kanoe Fuyu whose luminous form is integrated into the system of his bike. They are agents sent by a powerful organization to retrieve the human with the ability to resist and transmute the NS5 infection that is spreading across the world, named Yion/Ion Green. However, their mission is delayed by the reckless actions of the Public Health Department's taskforce and the kidnapping of Yion/Ion Green. Will they complete their mission? Where has Yion/Ion Green been taken? These questions will only be answered as more volumes are released. The art in BioMega is similar to BLAME!, with its complicated concrete sprawl and ludicrously wide, empty spaces. However, things seem to happen at a more reasonable pace. In this manga, there is emphasis on the swiftness of the attacks made by Zouichi, such as the gun being sheathed just before the enemies fall to the ground. Speed is crucial in this manga, unlike in BLAME!, and the plot develops just as quickly. An interesting read, especially if one has enjoyed BLAME!

Killy is a man of few words. He wanders, seemingly endlessly, through a lonely, gargantuan labyrinth of concrete and steel, fighting off cyborgs and other futuristic nightmares, searching only for something called Net Terminal Genes. And he has a very powerful gun, which he uses without hesitation whenever anything resembling danger rears its ugly head.
Who is this quiet, violent, determined man and what are these Genes he seeks? The small communities he finds tucked into the crevices of this towering, dystopic ruin hardly give him leads on his treasure, driving him to find larger enclaves of civilization where people can reveal more about the world he lives in and the quarry he seeks.

Adventure-student Killy in the Cyber school quest… Features the character of Blame...In a high school setting?!?! Parody. NOTE: These chapters are actually chapters 2, 3, & 4 of Blame Gakuen! and So On

Collection of Blame-related short stories: • Zeb-Noid A bloody war that spans millenniums. Two soldiers set out to kill each other. An encounter that could change their two species’ fate forever. • Blame Academy! • Blame Academy! - Tokyo and Nara Under One Umbrella • Blame Academy! - Under the Tower of Blooming Sakura • Parcel • Blame! NSE (NSE: Netsphere Engineer) The much-awaited sequel to BLAME! follows a man, called a Dismantler, who is in charge of sub-dividing the nexus towers that incurr Safeguard interference upon its detection of humans without the net terminal genes. Although humans are once again able to reside in the Net sphere, the Safeguard are still a threat. The Dismantler or NSE, or Net sphere engineer, goes on a journey to aid mankind in their survival. • Pump • Blame!² The protagonist is a descendant of Pcell. This story happens a long time after the events of Blame!. This young silicon creature knows well the havoc that Killy brought and decides to move towards the end of the megastructure, to look for him. • Numa no Kami • Winged Armor Suzumega While it’s not explicitly mentioned in the story, it’s believed that Suzumega is at least somewhat related to Abara since it features the Gaunas. - Kotonoha

Outer space, the far future.

A lone seed ship, the Sidonia, plies the void, ten centuries since the obliteration of the solar system. The massive, nearly indestructible, yet barely sentient alien life forms that destroyed humanity’s home world continue to pose an existential threat.

Nagate Tanikaze has only known life in the vessel’s bowels deep below the sparkling strata where humans have achieved photosynthesis and new genders. Not long after he emerges from the Underground, however, the youth is bequeathed a treasured legacy by the spaceship’s coolheaded female captain.

Note: Won the Kodansha Manga Award for general manga in 2015. Won the Seiun Award for Best Comic in 2016.