"There are too many unnecessary people" - A story of destruction dedicated to a certain person who thought such.

25 years old, no money, no job, no girlfriend. Kurokawa, a man absorbed with an anime called "Meromero Melodies" and on the fast track to nowhere in life, grabs hold of a certain ability, "BANG".

When Kassey was young, her grandmother used to tell her stories with adorable and fantastic characters called "Yumon". Now Kassey has suffered an accident and became stuck inside her dreams where she has close encounters with those now-not-so adorable real creatures like she wished, involved with a terrible criminal who's head was looked for with a tempting reward in exchange; his name is Eon

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From MangaHelpers:

Scientists predicted an imminent meteor impact on Earth that would annihilate civilization, but contrary to their prediction, the meteor missed Earth. Though avoiding immediate destruction, humanity found that the meteor left behind something in its wake, something that would change the course of civilization forever: a new form of bacteria that ate through all known metals.
Facing this new era where all metals turn to ash, Jinkichi and his classmates will have to survive with little help from the Japanese government. Some of his classmates have already begun to understand that the norms of the past have collapsed, and lawlessness will be the new law. Jinkichi will have to protect himself as well as his classmates from the violence that ensues.

11 soldiers who are on demilitarized zone search mission. Shut down General Outpost....They should have never gone there

A boy from the future meets a girl from the present. Together they are destined to save the world.

Chigira Chiaki loved the tales of Kuroyukihime and Black Lotus her beloved elder brother told her about.

Returning to Japan after a long stay in America, Chiaki entered the Private Seibi Academy for Girls. There, she met the club members of the Enbuken and starts her journey into the Accelerated World.

Eurha is a 17 year old popular High School Student/Writer/Novelist who often gets into trouble because of her physical appearance. One day she received a mail from his older brother who works overseas, inside the mail was a Contract called the "Legal Friend Contract." The 1 year term contract claims that if you sign and agreed to the terms and conditions, you can be assured to be 100% free from any physical harm. After a couple of days , she met this tall man named "Kiro" who claims to be a being called "Legal" and can assure Eurhas physical safety.

The Katvarna Empire is at war with the neighboring Republic of Kioka. In the Katvarna Empire, the lazy, woman-admiring Ikuta hates war, but due to certain circumstances, he grudgingly takes the High Grade Military Officer Exam. No one would have expected that this 17-year-old young man would eventually become a soldier called a great commander by others. Ikuta survives this world engulfed in war with his superior intellect.

In the land of Gion, the capital of Japan, a mysterious "divine power" has brought about great prosperity. It is a power that only brings about changes in girls in the form of turning them half-animal, a sign that they are servants to a god, as well as granting them great power. Some that are strong enough become Onmyou and fight evil. Others whose power have gone berserk become Orochi, fated to bring death and destruction to man.

It was once thought that those who became Orochi had to be slain with no hope of saving the helpless victim—until a mysterious young man named Gion appeared to save one such girl. Will he be strong enough to fight the Orochi and bring an end to their terror?!

From OSTNT:

When the maid from the heaven failed to protect the Phoenix egg from a mysterious figure, she used her last power to send the Phoenix, king of all birds into a chicken egg and soon the Phoenix hatched into a chicken.

Follow the Phoenix and his chicken sibling on an epic adventure!

The prequel manga to the Cyborg 009 vs Devilman OVA.

When high school student Sataki Tadashi was young he received the ability to deceive people from a supernatural being known as "Mujina." Three years later, he becomes an adjutant to the local police and begins to put his abilities as a con artist to use for the sake of "punishing evil that can't be judged by law."

The girl who drank Mímisbrunnr to become a god from human, and the person who made her a god Odin.

The adventure sets forth to stop Ragnarok from happening!

Oldman, a mysterious man who wears an old-man mask and punishes the criminals and evils in the city, is the idol of many, including an elementary student named Tong. Even though Tong's father is a policeman, he feels embarrassed and ashamed of his father's inability to solve any crimes. However, on the day of Tong's 12th birthday, something shocking happens..!

Itsuki and Hayato, two brothers who grew up in a village nestled deep in the mountains, set out to hunt down a wolf that has been attacking the livestock of the village. Itsuki is about to go in for the kill when a gigantic beast appears out of nowhere, snatching up the wolf in its jaws and sucking the life out of it. The beast that stared Itsuki down was a gargantuan, blood-sucking vampire deer… Will the two brothers be able to return to the village alive?! Find out in this blood-filled action-packed story by extraordinary mangaka Kaishaku!

Due to an incident, two vowed-siblings entered two opposite factions. What will fate bring the two?

The story of the Green Clan, "Jungle," starring antagonists of K anime series 2, K: Return of Kings.

[Summary by OSTNT] Legend told; there exist a single being who embraced death to kill the God. Before death, he managed to create three eyes that hold his immense power and was then thrown down to the world of humans.

From MangaHelpers:

During the feudal era, warlords were not only in danger from enemies outside the castle, but also from within like their own lieutenants they trusted. To protect themselves, they secretly began to use decoys of themselves. Honda Masanobu was part of Tokugawa Ieyasu’s council and also his closest friend. However, to defend his home country from Oda Nobunaga’s campaign, he leaves his position. During the 10 years on the battlefield, he meets Jirosaburo Motonobu who looks almost identical to his former master. Masanobu comes to realize that Jirosaburo must become Ieyasu’s shadow because of his trustworthy character and battle experience. [vyc]

Celestial wizard Lucy wants to join the Fairy Tail, a guild for the most powerful wizards. But instead, her ambitions land her in the clutches of a gang of unsavory pirates led by a devious magician. Her only hope is Natsu, a strange boy she happens to meet on her travels. Natsu's not your typical hero - but he just might be Lucy's best hope.

Note: Won the 33rd Kodansha Manga Award for Best Shounen Manga in 2009 (shared with Q.E.D. - Shoumei Shuuryou). Won the Society for the Promotion of Japanese Animation's Industry Award for Best Comedy Manga in 2009. Vol. 9 was nominated in the Youth Selection category at the 2010 Angoulême International Comics Festival.