Knights of Sidonia

The story is set in a distant future, a thousand years after humans flee from Earth, which was supposedly destroyed by shapeshifting gigantic alien monsters called Gauna (%u5947%u5C45%u5B50%uFF08%u30AC%u30A6%u30CA%uFF09?), aboard massive spaceships created from the remains of the planet. One of said ships is Sidonia, which has developed its own human culture closely based on that of Japan where human cloning, asexual reproduction, human engineering such as controlled hybrid human/animal mutations and human photosynthesis are commonplace, and is arguably the last human settlement remaining as the fate of the other ships is unknown. Little is known about the true nature of the Gauna or the huge ship they board to pursue Sidonia. Each Gauna has its core protected by a huge mass of seemingly impenetrable material known as the "placenta" (%u80DE%u8863 ena?), and once the placenta is shed away and the core is wounded beyond repair, the Gauna's body disintegrates.[1]