Genre - Mecha

A spin-off of the various works of Kamachi Kazuma. One day, Kamijou Touma (A Certain Magical Index) faced yet another misfortune. His toilet was broken and spraying water everywhere. As he was lamenting his misfortune, suddenly he appeared in a strange place along with Index and Misaka. Soon enough, more strange people begin appearing...

Han Xiao, a veteran player of the game "System" passed on startlingly sincerely busy doing an evening out demand. He was sent to the game world ten years sooner and turned into a NPC with a player's board and was reawakened in the foundation of the game's lowlife. To endure, Han Xiao undauntedly picked the "Repairman" occupation and focused on development. Acquainted with the emphasess and rules of various renditions of the game, he promised to lead the multitude of machines, topple the reprobates, and ascend without any preparation to turn into the most grounded.

The city of Sternbild is home to many people of different races, backgrounds, and those who are called Next. Next are people who possess special powers. They are the superheroes who protect peace within the city. The story mainly focuses on veteran hero Kotetsu T. Kaburagi (aka Wild Tiger), who is assigned a new partner -- a young man named Barnaby Brooks Jr. Barnaby and Kotetsu usually have trouble working together as they have conflicting opinions on how a superhero should act. Kotetsu is determined do what's best for the people, while Barnaby took up superheroing in the hope of one day discovering his parents' murderer.

A short manga version of the UFO Robo Grendizer anime. Released along the anime series, UFO Robot Grendizer follows the adventures of Duke Fleed, the prince of Planet Fleed, who, disguised as Daisuke, a farm worker, fights against the forces that destroyed his planet, the Vegan Empire, also the creators of Grendizer that Duke stole to fight them. While not originaly considered part of the Mazinger series, Koji Kabuto and the Mazinger mechas appear in this series, making it sort of a sequel. Grendizer introduced the concept of a transformable robot and a space mecha, concepts that were later taken into other mecha series. It was extremely popular in Japan, Canada, France, Italy, and the Arab world and has a strong following in those countries even today.

Half a century ago, the human race was attacked by an enemy from the sea known as the AUS. When Reiji Shiroyama was little, he was unable to protect his sister from the AUS because the gun he tried firing jammed. Since then, Reiji refuses to trust guns and only trusts his fists.

In a universe where men and women are mortal enemies, Hibiki is captured by a band of female pirates. The group find themselves stranded with a super ship they dub the Nirvana and set out for the female home planet. Along the way, they discover the existence of the "The Harvest" and the possible destruction of both men and women. The manga differs greatly from the anime, with fewer characters and focusing more on the relationship between Dita and Hibiki.

Vandread Special Stage collects together several humorous side stories, as well as a final story arc where the Nirvana meets up with the rest of the Mejere pirates, so Hibiki must go in disguise...

Set in the near future where Mother Nature has decided to fight back against all of the human encroachment. It has your standard apocalyptic scenario, but we're right in the middle of the apocalypse actually happening, rather than the aftermath. Vines and foliage entangle cities, as large wooden mech-like creatures called Arethusa (named after one of the mythical Greek Hesperides that tended the gardens in a remote corner of the world) rampage through cities. Our main character is Souma Shin, a punk kid out of Japan. We start off with him coming to visit his twin (?) brother Ken. All hell breaks loose as Shin finds a group of small kids being used for military purposes, and tries to save them in the confusion created by an Arethusa invading the compound.

From PRISMS: Wahhaman is a special robot soldier built ten thousand years ago by the Atlanteans. Found and dug up in present-day Toukyou, he doesn't remember anything, due to a nasty knock to the head he received at some point.

An expansion of the Strike Witches series, World Witches - Contrail of Witches details the short stories of various witches from areas of the European front of the Neuroi War.

From DrCoke at MangaHelpers: Six years ago, Tsukihiko was caught in an assassination attempt on a little girl, Sami, when he attempted to be her shield. This incident nearly killed him and the girl together, but the little girl was the daughter of an extremely powerful family. With its vast amount of resources, the family was able to keep both Tsukihiko and Sami alive by recreating both of their bodies with cyborg technology. This has forced Sami to permanently rely on wired connection to her life sustaining computer. On the other hand, Tsukihiko has become a cyborg "Knight," sworn to protect Sami from harms way.

The Isekai hero has defeated the Demon King and is being returned to his world; however, when the princess gives him a hug, they are both transported to a futuristic world.Can they survive right now?