Mecha
Mecha are self-propelling machines that are modeled after humans; some can change into multiple, non-humanoid formats as well. They're usually controlled by an internal pilot or by remote, but are sometimes sentient beings that move autonomously. A mecha's size ranges from bulky, wearable armor to a massive, towering contraption and beyond. While mecha have a wide range of applications, such as making manual labor easier, they are most commonly portrayed as heavily-armed war machines. (Source: Anime-Planet)
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When a spacetime warp sends the Autobots and Decepticons to the Japan of another dimension, they get involved in Mazinger Z's fight against Dr. Hell and Baron Ashura.

Mazinger vs. Transformers is a cross-over manga featuring the characters from the Mazinger and Transformers franchises.

The six chapters will each be drawn by a different artist
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The year is 2307 A.D. In the shadows of Celestial Being, another group of Gundam Meisters operates, hoping to put an end to warfare and strife themselves. Chall Acoustica, director of Fereshte, together with criminal Fon Spark set out to change the world through their own means, but things are not as they seem as they run into Team Trinity and get issued an ultimatum... to hand over the 0 Gundam's GN Drive.
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Kyouhei, after moving away to Tokyo from his old town to get away from the events that happened, is on a goukon with his friends, including his old neighbor, Shiba. After drinking for a whole night, he and Shiba discover a dead, bloody, body in the elevator. He is told by his younger sister, Utao with her Kamisama Doll, that Aki, an old friend, and his Doll, are the culprits responsible.
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Leon, a former Japanese worker, was reincarnated into an “otome game” world, and despaired at how it was a world where females hold dominance over males. It was as if men were just livestock that served as stepping stones for females in this world. The only exceptions were the game’s romantic targets, a group of handsome men led by the crown prince.

In these bizarre circumstances, Leon held one weapon: his knowledge from his previous world, where his brazen sister had forced him to complete this game. This is a story about his adventure to survive and thrive in this world.
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A mecha otaku is reincarnated into another world as Ernesti "Eru" Echevalier. In this magical world, the country is protected by knights who pilot a kind of large humanoid weapon known as the Silhouette Knights. Dreaming of piloting these robots, Eru and his childhood friends, Archid and Adeltrud Olter, study Magic and work toward their goal together.
The manga adaptation of the light novel series by the same name.
Russian / Русский
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Suddenly, a fleet of ships with mysterious super-weapons called the "Fleet of Fog" appeared all around the world. Humanity didn't have the technology to fight such a fleet, so they were driven out of the sea...
Seventeen years after the battle, for some reason, Gunzou Chihaya and his crewmates aboard the I-401 and the personification (Mental Model) of the I-401, Iona, started fighting the Fleet of Fog...

The following links are to AnimeNewsNetwork for the anime:
Anime
Movie (remix)
Movie 2
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A laid-back spinoff that will focus up on Samurai Caliber, Max, Borr, and Vit as they go about their everyday lives. Ariko (character designer of Hina Logic - From Luck & Logic) pens the series.
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Alternate fan translation of volume 0.2 of Honkai Impact 3rd.

"On February 1st, 2001. The entire man research staff of Shicksals Babylon facility in Siberia disappeared overnight. While Theresa investigates this mystery under orders from Otto, Walter and Einstein make preparation for her appearence. The stage is set for the second Honkai Impact."
Timeline : Set 14 years before the start of the game.
Arc is completed in CN and by official MiHoYo manga team - HOMU Comics.

Main Story :
# Book 1001 = Escape From The Sky
# Book 1002 = Cherry Blossom Recall
# Book 1003 = Mystery of Stigmata
# Book 1006 = Anti-Enthrophy Invasion
# Book 1007 = Gratitude Arc
# Book 1008 = Moon Shadow

Side Story :
# Book 1004 = Violet Sea Tales
# Book 1005 = Dark Sakura Tales | Guns Girl SchoolDayZ EX - Sakura Arc
# Book 1009 = Purple Kite's Tales
# Book 1010 = Secret of the God Keys
# Book 1012 = 2nd Herrscher/Lawman

Spin-off :
# Book 1011 = When Kiana Play Honkai Impact
# Book 1013 = Valkyries' Dining Escapades
# Book 1014 = Summer Memories
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A droid picked up an abandoned child and decided to raise it.

Links:
  • Creator Pixiv
  • Creator Twitter
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    A Certain Scientific Accelerator, which Accelerator is the main character. The events of the manga occur after his defeat at the hands of Kamijou Touma and the gunshot wound that he received at the hands of Amai Ao, though it is later revealed that the manga takes place prior to meeting Yomikawa Aiho.
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    Rygart Arrow is the only one in his world who lacks the inherent ability to power up quartz, the energy source that makes all of the machines run. Nevertheless, he’s pretty well connected. The King and Queen of his country of Krisna happen to be old college friends. But so is Zess, the guy who is leading the army of a neighboring kingdom in an attack on Krisna.

    How did it comes to this? There’s little time to ponder the implications as an army in giant, mechanized battle suits attacks. Arrow just feels like he’s in the way – until he comes across a powerful, ancient mech that no one has yet to be able to figure out how to run. But his natural affinity for the suit’s operating mechanism may just turn Arrow into the most important player of all.
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    The inventions of world renowned scientist Juzo Kabuto are peerless. But Professor Kabuto lives with a heavy heart after his research cost the lives of his grandchildren's parents.
    One ominous day, Juzo Kabuto gives his eldest grandson Kouji a terrifying inheritence - a giant robot known as Mazinger Z, a machine that is the pinnacle of Juzo's legacy. This super weapon is capable of making Kouji Kabuto the most powerful person in history, with the destiny of the world in his hands. Mazinger Z has the potential to become the savior of humanity... or the calamity that ends it. With Mazinger Z, Kouji Kabuto can become God or Devil.
    But when Kouji begins having visions of lives he's never lived, will he be able to keep his grasp on reality long enough to survive what awaits?
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    During the era of space exploration, mankind is at war against monsters of unknown origin. The battle is grim, and the future looks bleak. Amidst the chaos, mankind plays their last hand. It's time for the Knights to step into the fray and turn the tide of this war.
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    a Manga Autobiography about their Mangas
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    Chitose Morishige is a 12-year-old seventh-grader without a friend in the world. Her father, Professor Morishige, built a robot companion for his daughter to ease her loneliness.

    The only problem is that Ichika Robata, the android, is so lifelike that Chitose believes she's a normal human girl who either ran away or was kidnapped by her father. Ichika attempts repeatedly to prove that she's a real robot, with hilariously disastrous results.

    Published in Weekly Shounen Champion.
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    The story is set in the distant future. The land is ruined, and humanity establishes the mobile fort city Plantation. Pilots produced inside Plantation live in Mistilteinn, also know as the "birdcage." Children live there knowing nothing of the outside world or the freedom of the sky. Their lives consist of battling to carry out missions. Their enemies are mysterious giant lifeforms known as Kyouryuu, and the children pilot robots called FranXX to face off against them. For the children, riding the FranXX proves their existence.

    A boy named Hiro is called Code:016, and he was once known as a prodigy. However, he has fallen behind, and his existence seems unnecessary. Not piloting a FranXX is the same as ceasing to exist. One day, a mysterious girl known as "Zero Two" appears before him. Two horns grow out of her head.
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    Young teenage girl Roue lives a peaceful life with her "uncle", a gear named Zett. She spends her days exploring the ruins of the old world, destroyed by World War III two hundred years ago. During one of those explorations, she finds a strange cylindrical gear who calls himself Chrome, who for some reason doesn't have a "base program", which determines a gear's main purpose. Chrome may have to find that purpose himself in his new life with Roue and Zett…

    Officially published:
  • In english free on MangaPlus (See "Official English" link below)
  • In spanish free on MangaPlus
  • In french by Ki-oon
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    The story and mythology of the Braves has already ended, and their star-spanning fable begins...
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    The story revolves around Objects - powerful, massive weapons that change the course of warfare - and Elite Object pilots. An odd Elite girl named Milinda meets Quenser, a student who aims to become a Object mechanic, with the soldier-in-training Heivia on a snowy battlefield.
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    Japan in the near future suffers an unexplained major disaster. Five years later, reconstruction is well underway. Two young researchers at a university are pinning all their hopes on robot development. Now their new interpretation of the eternal hero Astro Boy up until his birth is just about to start!




    The manga tells the story of what happens up until the birth of Astro Boy and is considered an "episode zero" story.

    Link:
    AnimeNewsNetwork (anime)
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    This is the story of how one primitive lame old mecha anime became a legend that led the way for humanity.

    After a malfunction, Eirun Bazatt arrives during a battle between what appear to be Japanese forces fighting against monsters called 'Malice' and he's not one to run away from a fight...
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    The emotionless agent Alpha was given a secret mission.
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    25 years after the battle at Ambat, the war between the Federation and the Vagans keeps escalating with no end at sight as the Vagans rejected all offers for a peace treaty. Flit, now married and father of two is a commander of the Earth forces determined to win the war and decides that the time has come to his son Asemu to succeed him as the pilot for the Gundam, entrusting him with the AGE Device on his 17th birthday. On an attack on his city, Asemu pilots the Gundam AGE-1 hidden at the family's stable for the first time to repel the Vagan offensive.
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    Standing by...
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    Crimes commited using manned combat-androids dubbed "Katana" run rampant. In an effort to maintain order, the government has organized the AKCD - "Anti Katana Crime Division." Togusa of the 8th squad of the AKCD, while holding existential doubts as a Human-Katana hybrid, continually casts himself into battle...
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    The story is set in the distant future. The land is ruined, and humanity establishes the mobile fort city Plantation. Pilots produced inside Plantation live in Mistilteinn, also know as the "birdcage." Children live there knowing nothing of the outside world or the freedom of the sky. Their lives consist of battling to carry out missions. Their enemies are mysterious giant lifeforms known as Kyouryuu, and the children pilot robots called FranXX to face off against them. For the children, riding the FranXX proves their existence.

    A boy named Hiro is called Code:016, and he was once known as a prodigy. However, he has fallen behind, and his existence seems unnecessary. Not piloting a FranXX is the same as ceasing to exist. One day, a mysterious girl known as "Zero Two" appears before him. Two horns grow out of her head.


    Fan colored
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    From Dark Horse:
    100 million years after the Great Destruction, life hangs on in the wastelands with humans, demi-humans, and massive creatures fighting for survival. With the Empire of Olympus using colossal beasts to crush their adversaries, only gladiator Delos, mystic Prome, and the titan Gohra they become can hope to stem genocide and heal the shattered Earth.
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    In XX AD, a new generation of arms race is emerging. “Vanguards” are the new type of weapons being used on the battlefield. Liu Li is a Vanguard that is about to retire. In her last 380 days she receives her final mission…
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    Clockworkers- mechanical men, created during the war as a weapon to kill as many as possible. That war may be long over, but rogue Clockworkers are still roaming about, spreading fear and death wherever they go.

    Machina's a member of the CWA, an organization dedicated to the destruction of these rogue robots.

    Along with Deus, her Clockworker partner, she travels the country in pursuit of these dangerous robots...
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    A mysterious monster called the High Beast has taken control of the regions of Eurasia and Africa. Japan has cut off from the mainland to protect itself from this threat. The daughter of a legendary mahjong player discovers that monsters attack whenever a mahjong piece is hit across the board. This allows humans to be separated from the battle and for mahjong players to effectively combat the monsters with robots controlled through mahjong moves.
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    Author's Twitter
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    Remember to forget is a four-page script of a story with a human twist in a dystopic, sci-fi setting. It is open-ended, allowing greater engagement and emotional investment by the reader. The Protagonist, an unnamed young alien has been up all night reflecting on his life. He is part of a race of intergalactic warriors who treat their atrocities casually and haphazardly. This bizarreness stems from the fact that each day, after they are done with the horrors of their conquest, they are submitted to a process which simply wipes out parts of their daily memories and experiences (their negative emotions and any sedimentary and residual conscience they might have left regarding what they have done). It is something which in the long-term leaves everyone devoid of empathy and realisation. This perpetual tuning up has the protagonist wondering, “What’s worse? The fact that we are harming others or ignoring that we have harmed others?”
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    In their closed-off underground village, Kamina and Shimon chafe at the limits imposed by the village elder. Yet all this will change, when Shimon stumbles across a fantastic device - just as the village's peace is broken by a violent intrusion.
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    The year is 1944, around when Miyafuji Yoshika joined the 501st JFW to protect Gallia.

    The South European nation Romagna is launching a Neuroi counteroffensive with its 504th JFW, nicknamed The Ardor Witches. Its core is made up by the Duchy of Romagna's elite, the Red Pants Unit, but, what is soon becoming evident as the detachment is coming together, is that the members all seem to a bit peculiar, not the least of which the commander.

    What will destiny have in store for this group
    of girls...?
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    In the Mazinger Otome series:

    V.1 - Mazinger Otome

    V.2 - Mazinger Otome Taisen
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    Latest franchise of the Zoids series.
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    This book contains game illustrations from the artists who created today's popular Korean illustration basics and 15 up-and-coming Korean artists, Kim Hyung-Tae, Opon, isanbon, popcorn, NG NoranGom, Shukei, Limha Lekan, Tiv, SR, YiLee, Isurugi, SeeD, MonsterGOGO, panamaman, maggi!

    Includes over 200 illustrations of game visuals, character illustrations, and original art work on top of a special interview with artists.
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    In A.G. 101 (the 101st year of the Advanced Generation calendar) a mysterious entity known only as "UE", or "unknown enemy", attacks and destroys the space colony Angel. This brutal attack becomes infamous as the "The Day the Angel Fell", and marks the beginning of humanity's war for survival. The series begins in A.G. 108 when the UE attack the space colony Ovan, where Flit Asuno now lives after he escaped colony Angel before its destruction. Flit's mother shortly before she is killed by the UE, she gives her son an object called "AGE Device". Within it he discovers the blueprints for a powerful weapon from the past—the ancient messiah named "Gundam."

    From these blueprints, Flit spends the next several years studying engineering at an Earth Federation base on the Nora space colony and designing the Gundam AGE-1. Seven years later, in A.G. 115, Flit completes the Gundam AGE-1 Normal, just as the UE attack Nora, and make use of it to aid the crew of Federation's battleship "Diva" in evacuating the colony's citizens before it is destroyed. Determined to bring the battle to the U.E. for destroying his home twice, Flit agrees to serve at Diva's mobile suit squad piloting the Gundam. After obtaining enough data and military power to establish a course of action, the crew of Diva and their allies launch a sucessful attack that destroyed the U.E.'s secret fortress in the Ambat asteroid. There they learn that the U.E. are actually the descendants of a supposedly failed human mission sent to colonize Mars, left for dead by the Earth Federation, who formed their own nation on the red planet called Veigan.
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    Eight years prior to the story, explosions caused by scientists at the foot of Mt. Asama which caused a meltdown of Getter Ray energy that spread throughout all of Japan. People throughout the world began to experience some extreme mutations from the irradiation of Getter Energy that caused them to fuse with machinery and organic material and were dubbed the Idea. To combat them the Getter Robo is created by the organisation GETTER and three pilots: Ryo, Hayato, and Musashi are recruited to pilot it and battle the Idea.

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