Genre - Mecha

Based off of a story arc from Osamu Tezuka's Tesuwan Atomu, Pluto follows the Europol detective Gesicht as he tries to uncover the mystery behind a string of robot and human deaths. The case becomes much more puzzling when evidence leans toward the murders being the work of a robot, which is something that hasn't happened for 8 years. (Anime News Network)

A collection of short stories by the author.

In the near-future on planet Earth, a world gone mad where never-ending war is a fact of life, Kirio is the coolest kid at school. Up in the sky, a giant robot is fighting a fleet of gunships, but the brilliant and distant Kirio is far from fazed—until the battling 'bot makes an unexpected landing in Kirio's front yard and rings the bell. But the worst threat for Kirio could be what stands on the other side of the door: an alien invader robot with the face of an adorable girl! (Source: Del Rey)

A mysterious orb envelops the city of Tokyo. All forms of communication are severed, leaving the inhabitants of the newly dubbed Tokyo Jupiter ignorant to their fate. Along with the United Nations, a special organization known as TERRA is formed: their mission is to liberate Tokyo from the otherwordly MU -- those responsible for Tokyo s capture. (Source: Viz Media)

My war isn't over! One mobile suit infantryman's personal battle resumes as a red fire blazes again in his eyes! Betrayed by his own men, Captain Grahad Mills, a commander of the SAA Special Force "Jackal," is held responsible for a conspiracy about which he knew nothing. Without defense counsel at his court, he is sentenced to death. On the morning of his execution, he escapes the military detention center; in the process blasting a troop of national military guards and killing its commander--Captain Waldman, his former subordinate and betrayer. All this is for revenge and to find out the reason for the treachery. The former hero--feared and known as "Genocide--starts to fight a battle he created by himself.

From MangaHelpers: This manga is related to the anime, "Rinne no Lagrange", although it has a different storyline. On the planet of De Metorio, Izo is a student in the royal pilot training facility, together with his few classmates, Kirius, Arei, and Sanu. One day, they get a new student teacher who happens to be De Metorio royalty, Princess Yurikano. She runs things a lot differently than Izo and the others are used to, but there's more to this princess than meets the eye. Will Yurikano be able to get Izo and the others to accept her training, and will she be able to survive the enemies that are gathering against her? [tethysdust]

K, a robot detective, joins the Tokyo Metropolitan Police Force’s Science Division and is partnered with human partner, Shinjo Go much to the chagrin of Chief Inspector Shiba Daizo, who distrusts the Robot. Together they battle the crimes perpetrated by the renegade conglomerate R.K.K. “BADO” (Robot Kaishi Kabukigaisha – Robot Rental Company)

From MangaHelpers: An alternate story of "Robotics Notes." In 2019, childhood friends Yashio Kaito and Senomiya Akiho are together in their high school's robotics club, but it is in danger of being abolished. Akiho wants to preserve the club, as she feels like it is her last link to her older sister, a roboticist. Akiho has only Kaito to rely on, but he's more interested in the game "Kill Ballad Online." It turns out, though, that Kaito's obsession with Kill Ballad may come in handy for their robotics club, and there are other allies they'll meet along the way! [tethysdust]

Story Synopsis taken from Volume 1 cover: Lux, who was a prince from the Empire that was destroyed five years ago due to the revolt, met with the princess of the new Kingdom, Lizsharte, by accidentally breaking into the bathroom of the girl's dormitory. "......How long are you planning to stare at my body, you fooooool!" The ancient weapons found from the ruins, the Drag-Ride. Lux who was called the strongest Drag-Knight in the past was now known as the "Weakest Undefeated", a Drag-Knight who doesn't attack at all. After the duel that started by the challenge from Lizsharte, Lux ended up entering the girls' school that raised Drag-Knights......! Lux's story where he is surrounded by the noble girls from the academy is about to unfold. The "ultimate" academy fantasy battle where the right and the might cross passes now begins! adaptation of the light novel series of the same name wirtten by Akatsuki Senri with illustrations by Kasuga Ayumu

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…

While Professor Saotome completes his masterpiece, the Shin Getter Robo, a strange object enters the Earth's atmosphere. Hayato, in control of the lab while Saotome obsessively works, orders Getter Robo and Getter Robo G to launch and destroy the object before it impacts. Note: Printed in bunko format under the Getter Robo Saga series.

A retelling of Mazinger Z seperate from the original series as well the recent anime remake.

The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Ledo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space. Waking from his artificially induced hibernation, Ledo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Ledo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Ledo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him.

Based on the Super Robot Taisen Original Generations franchise, this is the story of "Kyosuke's Route" at the very start of the events that set the basis for the whole thematic of the universe. Meet Kyosuke Nanbu and see how one man, this one man is pulled into a fate that involves politic conspiracies, military weapon development run conflicts, betrayals, revolts, people with super natural powers & an enemy extra terrestrial invading menace. Even though he is just a "regular human", Kyosuke is to the core a brave man who will not be shunned "so easily" and at the command of his own trademark machine, the so called old fashioned "Alt Eisen" he will lunge towards the center of the conflict and will blow away everything that stands in his way.

In the distant future, people build their homes and raise domestic animals in subterranean caverns. As a result, they live in fear of the occasional earthquake and cave-in, and have been for hundreds of years. Jeeha is one such village. One day, a boy named Simon happens to find a small, shiny drill whilst digging to expand the village. At the same time, Kamina, a guy who believes that there is another land above the village, persuades a gangster to break through the ceiling in order to leave the cavern. Suddenly, an earthquake occurs and the ceiling collapses, followed by a big robot breaking through the ceiling. Kamina is now sure that there is a world above them. Recklessly, he begins to fight against the robot. At that moment, another person appears from the land above. It is a girl by the name of Yoko. With a rifle in hand, she had been tracking the robot. However, all she could do was distract it. Then, Simon shows what he had found to Kamina and Yoko. It's a mysterious robot whose head is also its body.