Kunihiro Mori

In the not so distant future much of the earth has been submerged under the sea or destroyed by earthquakes. At the center of the turmoil is the mysterious Orphan. Orphan may or may not be the original cause of the cataclysms. Orphan`s goal is to raise a ship hidden deep beneath the sea to the surface, but doing so would result in the destruction of all humans except for the small number which are loyal to Orphan. (myanimelist.net)

Mars is now almost entirely covered in water. Humanity exists in large city-ships that float through the open seas. But life is hard for those who live on Mars--the economy is in bad shape, work is scarce, and food is expensive and highly prized. Gram and his friends try to do the best they can, but the work keeps drying up. Some have taken to a life of piracy to combat the corruption in the government; one such group is the pirates of the feared Ship of Aurora. And the Earth government, which (myanimelist.net)

Abe no Masahiro is the grandson of the greatest Onmyouji Abe no Seimei. His grandfather sealed his sixth sense (the ability to sense monsters) in order to protect him. He doesn't know about it until he meets Mokkun. While fighting his first monster he breaks the seal and his quest to become the next greatest Onmyouji begins. (myanimelist.net)

A Romance of the Three Kingdoms retelling using SD Gundams.