Siren is the absolute queen who administers the state of lakeside park city, which boasts a 99.9% safety and happiness rating. One day, one of the Ondine, the information terminals born from her, gets lost and helped by an uncouth boy named Len Kinami. Ondine feels a wamrth from Len, who complains as he pulls her hand along, but that emotion flows in to the queen, who becomes bewildered by the unknown feeling!

Imagine waking up one day to find that the sky around has been engulfed by an unidentifiable mechanical presence. Imagine that this new sky opens up and releases a Monomakia, a living weapon, whose sole purpose is to end your life. That's exactly what happens to 13-year-old Marin Asagi, an orphaned girl living in an alternate version of Tokyo in the 1970's. Young Marin's only chance to survive rests with Melan Blue, the Gun-Swordsman, who is destined to protect her. With arms made of weapons, the power of flight, and retractable body armor, Melan is a powerful bodyguard indeed.
Who is sending the Monamakia? Why do they want Marin dead? Who sent Melan to protect her? What is the secret of Brigadoon? With her new protector by her side Marin sets out across two worlds to discover the answers.

Kuromine is a guy who does not lie, hence his nick name "a bag full of holes". But everyone has secrets, and even Kuromine has one. Meet the very lovely, elegant, and mysterious Shiragami whom Kuromine has new found affections for... But what is this? Why does she have humongous wings when no one's looking and super long canines? Something is very different about this girl...

At the end of the world, a boy wakes up to find an odd shiny orb next to him.

In the future world, technology runs the universe. An intelligent robot committed many mistakes as he did not fully trust human beings. As his punishment, he lost his job and was sent back into the ancient times. However, the device had accidentally brought him back to Ancient China, where he met a cold yet beautiful snake demon. A series of stories unfold as the two were brought together by fate...

In the distant future, humanity is now only made up of women. Kohane Sumino has just enrolled into the prestigious Shirasakuya Academy that contains within it a secluded courtyard garden maintained by the Gardening Club. Legend has it that if two people pledge their love for each other underneath a pair of trees in that garden, they will be bound for eternity. Kohane seeks out the garden on her first day of school, where she meets Rekka Hanatsuka, the friendly self-proclaimed acting president of the Gardening Club. Although Kohane proves to be fairly popular early on, she soon learns that paradise is not without its thorns.

A collection of oneshots:

1. Four Billion Nights
2. Aru Adauchi no Hanashi
3. Kamaitachi no Hi

A compilation artbook/manga anthology, by Range Murata, with contributions by various artists.

In the year 2031 A.D., Earth has become ravaged by the attack of insect-like aliens called the “Blue”. In an effort to escape their destruction, humanity abandons the planet and now resides in an orbiting space station called “Second Earth”.

After being diagnosed with an unknown disease, Kaido Yuji was put to cryogenic sleep on Earth until a cure was found. But he’s given the rudest awakening of his life when Armour Shrike pilot Marlene Angel comes to pick him up, and Yuji witnesses in horror as her unit is wiped out by the Blue. Now Yuji must survive against the harsh new rules of this apocalyptic world -- and find out the true nature of his strange disease.

A collection of nine surreal short stories sharing a theme of water. 
Chapter 1, Bon: A young boy ponders family affairs around Bon.
Chapter 2, We’re Still on Our Way: An astronaut cadet must figure out his motivation if he is to succeed and go into space.
Chapter 3, Fusion: When the ultimate form of love is fusion, the government must work to stop a declining population.
Chapter 4, Such Sorrowful Stars: In a near-death experience, a man meets a solitary girl running endlessly.
Chapter 5, Salt Damage Season: A young woman is captivated by marine “vortexes”.
Chapter 6, Sea Weather: A girl follows a schoolmate home only to realize she lives under the sea.
Chapter 7, Squish: A girl can see things she calls “squishes”, transparent blobs all around us.
Chapter 8, Meltism: If we are the same as the planet, what separates us?
Chapter 9, Season・Time・Water: The world adapts to the changing of the seasons.

It began with first contact. In a dystopian world, a silent "watchman" follows and evaluates a gifted young woman.

From DrMaster:
Yuji Midorikawa is your typical high school student whose has a secret identity: He is "Green" in the high school battalion unit, Gakusei 5 (G5 for short). G5 is the special unit trained to fight and protect Earth against the invasion of the dreaded Galactic force "Gurdark" and its sexy queen Mayura. But Green has a problem. He really can't fight, and always ends up hiding behind his other team mates. What ensues is a witty and wild ride as our "Imperfect Hero" struggles to maintain his reputation as a "guardian of earth" while keeping up his grade point average in school!

A parasite keeps a house of mysteries that is full of twisted exhibits. Another kills an entire family, only to get stuck infecting a teenage daughter obsessed with fairy tale romance manga. These and 13 more stories, from some of the greatest shojo manga artists alive today, make up a chilling, funny, and entertaining tribute to an all-time classic series.

A girl after falling through a hole in the floor of her school discovers a robot. How will this girl and the robot interact?

A mysterious mastermind single-handedly releases 206 of the most dangerous prisoners around the states. When the prisoners rampage New York City, the police helplessly watch as a young boy with a katana appears. His mechanical arm has a countdown from 206; what is his purpose?

Who's the most popular of all the Tenchi girls? That's an easy question to answer. It's sweet li'l Sasami, of course! She's the cutest and best loved and, without a doubt, the most accomplished cook of the bunch. Whether she's thwarting evil space invaders or simply negotiating peace among her bickering housemates, Sasami always has a big smile on her face.

Youko gets a visit by a girl from the future who needs to have sex with her because she wants her egg cells.

Itsuki Minami needs no introduction – everybody’s heard of the “Babyface” of the Eastside. He’s the toughest kid at Higashi Junior High School, easy on the eyes but dangerously tough when he needs to be. Plus, Itsuki lives with the mysterious and sexy Noyamano sisters. Life is never dull, but it becomes dangerous when Itsuki leads his school to victory over some vindictive Westside punks with gangster connections. Now he stands to lose his school, his friends, and everything he cares about. But in his darkest hour, the Noyamano girls come to Itsuki’s aid. They can teach him a powerful skill that will save their school from the gangsters’ siege and introduce Itsuki to a thrilling and terrifying new world.

Note: Won the 2006 Kodansha Manga Award in the shōnen category. A new edition named Air Gear Unlimited was released in 2014. The format is bigger and it contains some coloured pages.

The Academy City on water, "Rikka". This city, otherwise known as 'Asterisk', was famous for being the world's largest stage for the integrated battle entertainment <Star Wars Festival>. The young boys and girls of the <Starpulse Generation> belonging to the six academies made their wishes with Shining Armaments in their hands, vying for supremacy -- Amagiri Ayato is one of them.

Ayato arrived at Rikka at the invitation of the Student Council President of the Seidoukan Academy, Claudia, and right after that he incurred the wrath of the <Petalblaze Witch> Julis, and ended up having to duel her.