Simon and Kamina were born and raised in a deep, underground village, hidden from the fabled surface. Kamina is a free-spirited loose cannon bent on making a name for himself, while Simon is a timid young boy with no real aspirations. One day while excavating the earth, Simon stumbles upon a mysterious object that turns out to be the ignition key to an ancient artifact of war, which the duo dubs Lagann. Using their new weapon, Simon and Kamina fend off a surprise attack from the surface with the help of Yoko Littner, a hot-blooded redhead wielding a massive gun who wanders the world above. In the aftermath of the battle, the sky is now in plain view, prompting Simon and Kamina to set off on a journey alongside Yoko to explore the wastelands of the surface. Soon, they join the fight against the Beastmen, humanoid creatures that terrorize the remnants of humanity in powerful robots called Gunmen. Although they face some challenges and setbacks, the trio bravely fights these new enemies alongside other survivors to reclaim the surface, while slowly unraveling a galaxy-sized mystery.

Tenchi Masaki's life changes forever when the ship of an infamous space pirate, Ryouko Hakubi, is shot down and crashes near his family's temple. Little did Tenchi know that by saving Ryouko, he would spark a series of events that would lead alien women from all walks of life to inhabit his home. This includes the delicate Princess Aeka of Jurai and her playful younger sister Princess Sasami; the scatterbrained first-class detective Mihoshi Kuramitsu and her more capable partner Kiyone Makibi; and the eccentric, mad scientist Washuu Hakubi. The six women do their best to adapt to their new lives, but their more advanced and exotic lifestyle does not mesh well with the simplistic customs on Earth. As a result, they just end up making a mess and causing trouble for poor Tenchi. Though the girls are a pain, Tenchi begins to form a close relationship with each of them, and through their bond, he begins to gain a better understanding of his role in the universe.

Fifteen years ago, disaster struck human civilization, and now dangerous man-eating monsters roam the ravaged lands, posing an existential threat to the remaining survivors. Amid this turmoil, an isolated facility shelters children and nurtures them in peace. However, as a few among them find out about the world beyond the narrow periphery of their nursery's walls, their curiosity about it slowly grows. Meanwhile, in the outside world, young survivors Maru and Kiruko band together to search for a special place called Heaven, each for their own reasons. Carrying past burdens and tragic secrets, the two hope to find answers to the cruelty they have experienced in their lives and in the world, which still remains in tatters.

Eons ago, a cube–like peaceful planet named Quarton, populated by shape–shifting living bricks called Tenkai, was ravaged by a war between two opposite factions: the Corekai and the Corrupted led by the ruthless warlord Vilius who desired to obtain the source of Tenkai Energy for his own purposes. However, the only ones who were strong enough to defeat him were the Tenkai Knights: Bravenwolf, Tributon, Valorn and Lydendor. Facing defeat, Vilius unleashed the mighty Tenkai Dragon, who was later defeated by the four Knights and its fragments were scattered across the planet. These heroes were never seen again, but the Corrupted have returned more powerful than ever. Now on planet Earth in the year 2034, four teenage humans named Guren, Ceylan, Toxsa, and Chooki find an interdimensional portal to Quarton where they are chosen by the Guardians to become the new generation of Tenkai Knights and prevent Vilius to take control of both worlds. (Source: Wikipedia)