Oku, Hiroya

Lonely high school student Kei Kurono isolates himself out of a growing cynicism toward his fellow man and the cruelty they are capable of enacting. One day, while waiting to take the subway to school, Kei's classmate Masaru Katou leaps onto the tracks in an effort to save a drunk man. Driven by an uncharacteristic desire to rescue someone else, Kei follows Katou down into danger. While successful in saving him, the two boys are killed by the train.

Kei wakes up beside Katou in an apartment full of strangers and furnished by a giant black orb with a glass-like outer surface. After finding out that everyone in the room has recently died, words appear on the black ball tasking them with killing a strange creature. The ball equips Kei and the others with power suits and mysterious guns before sending them off to collect this bizarre bounty.

Although Kei discovers the mission to be far more deadly than originally suspected, he manages to survive. He is teleported back to the apartment where he and the other survivors are rewarded point values according to their actions in battle by the black sphere, which a fellow survivor says is called "Gantz." Despite his death earlier that day, Kei is granted the ability to return to his daily life with one condition: he can be uprooted from his day at any time and summoned back to the apartment, where Gantz will task him and other recently deceased with the assassination of another target. 

While Katou dreads the inevitable return to Gantz, Kei finds himself living for the sole purpose of carrying out these missions. Thriving in the heat of battle and learning to care about himself and his comrades, Kei faces escalating monstrous threats that begin to bleed out into his normal life outside of Gantz.

[Written by MAL Rewrite]

Gantz

GANTZ

Iwaaki, Hitoshi

"Parasites" are tennis ball sized creatures, whose numbers and origins are unknown. They invade and take over the human mind in order to survive. Shinichi Izumi is a 16-year-old high school student who lives with his parents in a quiet neighborhood. One night, a Parasite invades Shinichi's body in an attempt to take control of it. However, it fails to complete the takeover process and ultimately ends up inhabiting only his right arm. 

Thus, both Shinichi and the Parasite—who calls himself Migi—retain their individual minds. Now in a peculiar "human and alien" relationship, Migi proposes that they cooperate to survive. Shinichi has no choice but to agree, and he must now cling to his morality as he and Migi face off against other bloodthirsty Parasites.

[Written by MAL Rewrite]

Kiseijuu

Parasyte

寄生獣

Tamura, Yumi

Natsu Iwashimizu's last memory of her family is eating her favorite meals with them. Unfortunately, she wakes up from her dream only to find herself in a sinking ship, being rescued by three strangers: Arashi Aota, whose kind-hearted personality does not match his quick temper; Semimaru Asai, who enjoys ridiculing Natsu's meek nature; and Botan Saotome, a skillful woman seemingly aware of their situation. Following the four's successful escape, they sail to a deserted island.

Unbeknownst to them, the mysterious island is Japan. After a meteorite landed on Earth, humanity was wiped out and the environment changed drastically. To repopulate the country, the government initiated the "7 Seeds" project, consisting of five groups—Spring, Summer A, Summer B, Autumn, and Winter—each with seven young healthy individuals and a guide. Natsu and the others were put into team Summer B, whose members are considered failures by society.

To get more supplies, the group must find one of the seven shelters built by the government. In a hostile, unfamiliar world with no loved ones to depend on, the quartet must learn to cooperate with each other to ensure their survival.

[Written by MAL Rewrite]

7 Seeds

7SEEDS

Aso, Haro

Feeling unsettled about the future, high school student Ryouhei Arisu often escapes the reality of life. After hanging out at a bar, Arisu and his best friends, Daikichi Karube and Chouta Segawa, wait for the first train to arrive in the morning. Suddenly, a colorful array of fireworks set off in the sky, and an enormous blinding firework renders them unconscious.

The trio finds themselves back at the bar covered in dust, discovering that the city has become a barren wasteland. But instead of being worried, Arisu feels alive for the very first time in his life and relishes the freedom of this lifeless city. However, his bliss is cut short when the group rashly enters a festival venue. Seeing its delicacies and lively ambiance, they think the place is a dream; unbeknownst to them, it will be the setting for their first deadly game.

Together with his friends, Arisu slowly enters the mysterious area known as the Borderland—an unknown country where every game puts their lives at stake, and a single misstep can lead to their demise.

[Written by MAL Rewrite]

Imawa no Kuni no Alice

Alice in Borderland

今際の国のアリス

Kondou, Kazuma

Kataoka, Jinsei

After a powerful earthquake nearly destroyed all of Tokyo, a prison known as Deadman Wonderland rose from what was left of the city. Privately-run through the guise and functions of a theme park, Deadman Wonderland takes in prisoners from all over Japan, using them as attractions for tourists. Little do the public know about the true purpose of this "theme park" and the horrors that take place within.

Enter Ganta Igarashi, a middle school student who has lived a normal life since the great earthquake occurred. This all changes when a mysterious masked murderer called the Red Man appears and kills his entire class, knocking him unconscious which consequently left him as the sole survivor. When he awakens, he is falsely convicted as the perpetrator behind the massacre, landing him a spot in Deadman Wonderland. What will become of this new inmate whose life depends on the bizarre "games" that this prison holds? And just what does Shiro, Ganta's supposed childhood friend who awaits his arrival, know about the Red Man?

[Written by MAL Rewrite]

Deadman Wonderland

デッドマン・ワンダーランド

Nihei, Tsutomu

In an enormous steel labyrinth riddled with horrifying creatures, humanity is forced to isolate itself in small enclaves while living in constant fear of its annihilation. In this dystopia, only a strange young man known as Killy is brave enough to traverse its unforgiving territories. 

Possessing superhuman strength and a rare Graviton Beam Emitter, Killy fights off bloodthirsty beasts and other fiendish forces in his desperate search for a human with the Net Terminal Gene—genetic information that holds the potential to restore the corrupt world. 

The dark world of Blame! follows Killy as he meets new people, sheds more blood, and draws closer to finding the Net Terminal Gene. Through these exploits, the true nature of the world is slowly pieced together.

[Written by MAL Rewrite]

Blame!

BLAME!

Nagai, Go

Soft-hearted Akira Fudou has always been somewhat of a pushover. When he reunites with his childhood friend, Ryou Asuka, in a fateful encounter, Ryou reveals to him the terrifying reality of his father's research: demons exist and are planning to claim possession of the earth once again.

Eager to help his friend save humanity, Akira agrees to attend Black Sabbath, a party filled with depravity and corruption, to attempt to merge with a demon. A near-death encounter causes him to unify with Amon, a demon feared amongst even his own kind. Together they form Devilman, a combination of Amon's strength and Akira's pure heart.

After uniting with Amon, Akira begins to fight against the demons with his newfound power, desperate to stop the downfall of all human civilization.

[Written by MAL Rewrite]

Devilman

デビルマン

Sunao, Yoshida

Kyuujou, Kiyo

In the distant future, Armageddon has caused the appearance of a second "Vampire's" moon. This sparks the beginning of a war between humans and "Methuselah," the vampires that feed on their blood.

Esther Blanchett is an orphan who was raised in the Church of St. Matthias in the city of Istvan. One day, she meets Abel Nightroad, a priest sent to subdue any threats to the Vatican, an organization allied with humanity. Beneath Abel's meek facade hides his real identity as "The Crusnik": vampire who preys on the blood of his own kind and the Vatican's greatest weapon.

Esther's peaceful times are cut short when the church is bombed and she is betrayed by her only friend Dietrich. With nowhere else to go, she teams up with Abel and Tres Iqus, a machine disguised as a human, to travel to Rome and look for answers behind the devastation of her home. However, their journey will not be easy, as they will have to battle various obstacles as well as discover the secrets of Abel's past.

[Written by MAL Rewrite]

Trinity Blood

トリニティ・ブラッド

Ishinomori, Shoutarou

Muraeda, Kenichi

Taki Kazuya, an Interpol agent living in New York City, is currently investigating a string of disappearances and murders which seem to have been caused by something inhuman. He always tells stories of his friend, a cyborg hero named Kamen Rider, who years ago in Japan brought down the evil organization Shocker, saving people from monsters and never seeking any reward for his deeds. However, the only ones who believe his tales are a group of orphans he has befriended.

When one of the orphans is transformed into a monster, Taki tracks down the creature responsible and attempts to fight it in his own costume, calling himself a new Kamen Rider. However, he fares poorly against it and is on the verge of being killed. At that moment, none other than Takeshi Hongo, the original Kamen Rider, comes to his rescue. Hongo and a newly inspired Taki team up and manage to defeat the creatures.

Afterward, Hongo informs Taki that a new danger is rising to threaten humanity and asks for his help before setting off to find more allies, the eight other Kamen Riders with whom he was once a team. Taki continues his work with Interpol, along with assisting Hongo's search.

[Written by MAL Rewrite]

Kamen Rider Spirits

仮面ライダーSPIRITS

Osuga, Megumi

Isaka, Koutarou

Andou is a high-schooler who possesses the ability to force others to vocalize his thoughts—an ability similar to ventriloquism. Inukai is young man shrouded in mystery who commands the vigilante group, Grass Hopper, which appeared in a city shaken by the downtown restoration program. This is a tale of courage, resolution… and confrontation; this is a depiction of the two boys' encounter.

(Source: Aku Tenshi)

Maou: Juvenile Remix

Maoh: Juvenile Remix

魔王 JUVENILE REMIX

Miura, Kentarou

Studio Gaga

Guts, a former mercenary now known as the Black Swordsman, is out for revenge. After a tumultuous childhood, he finally finds someone he respects and believes he can trust, only to have everything fall apart when this person takes away everything important to Guts for the purpose of fulfilling his own desires. Now marked for death, Guts becomes condemned to a fate in which he is relentlessly pursued by demonic beings.

Setting out on a dreadful quest riddled with misfortune, Guts, armed with a massive sword and monstrous strength, will let nothing stop him, not even death itself, until he is finally able to take the head of the one who stripped him—and his loved one—of their humanity.

[Written by MAL Rewrite]

Included one-shot:
Volume 14: Berserk: The Prototype

Berserk

ベルセルク

Ishida, Sui

Lurking within the shadows of Tokyo are frightening beings known as ghouls, who satisfy their hunger by feeding on humans once night falls. An organization known as the Commission of Counter Ghoul (CCG) has been established in response to the constant attacks on citizens and as a means of purging these creatures. However, the problem lies in identifying ghouls as they disguise themselves as humans, living amongst the masses so that hunting prey will be easier. Ken Kaneki, an unsuspecting university freshman, finds himself caught in a world between humans and ghouls when his date turns out to be a ghoul after his flesh.

Barely surviving this encounter after being taken to a hospital, he discovers that he has turned into a half-ghoul as a result of the surgery he received. Unable to satisfy his intense craving for human meat through conventional means, Kaneki is taken in by friendly ghouls who run a coffee shop in order to help him with his transition. As he begins what he thinks will be a peaceful new life, little does he know that he is about to find himself at the center of a war between his new comrades and the forces of the CCG, and that his new existence has caught the attention of ghouls all over Tokyo.

[Written by MAL Rewrite]

12 Manga Like Green Worldz