In the far future, humans abandon a devastated Earth and traveled to outer space. However, due to unknown phenomenon that prevents them from traveling into space, humanity returns to Earth only to find it inhospitable except for Japan. To accommodate the entire human population, pocket dimensions are created around Japan to house in the populace. In order to find a way to return to outer space, the humans began reenacting human history according to the Holy book Testament. But in the year 1413 of the Testament Era, the nations of the pocket dimensions invade and conquer Japan, dividing the territory into feudal fiefdoms and forcing the original inhabitants of Japan to leave. It is now the year 1648 of the Testament Era, the refugees of Japan now live in the city ship Musashi, where it constantly travels around Japan while being watched by the Testament Union, the authority that runs the re-enactment of history. However, rumors of an apocalypse and war begin to spread when the Testament stops revealing what happens next after 1648. Taking advantage of this situation, Toori Aoi, head of Musashi Ariadust Academy's Supreme Federation and President of the student council, leads his fellow classmates to use this opportunity to regain their homeland. (Source: Wikipedia)

In the Edo or Tokugawa period (1600–1868), Ran, a female wandering samurai whose skill with the katana is only matched by her taste for sake (rice wine), is joined by a chinese martial artist who calls herself Lady Meow of the Iron Cat Fist. Tsukikage Ran has individual episodes that are just short stories of their adventures.

Three hundred years ago, a genetic experiment gone wrong caused the mutation of all forests on Earth. Armed with consciousness, the vegetation sought to destroy all of humankind, and the war that ensued turned the planet into a hellish dystopia. In the present day, Agito, a young boy, lives with his father in Neutral City—a village maintaining an uneasy truce with the neighboring forest. One day, Agito, on his way to collect water, becomes separated from his friend and stumbles upon a relic of the past: a girl sleeping in a mysterious machine. Agito awakens the girl, Toola Cm Sacl, and introduces her to the village. But outside forces have ulterior motives for the girl, who holds the key to restore the Earth. Misguided by Shunack, a soldier from the old world hellbent on destroying the forest, Toola follows him despite Agito's warning. Determined to save Toola and unify humankind with the forest, Agito borrows the power of the forest and pursues her.

Gakusen Toshi Asterisk 2nd Season continues the story of Genestella students Ayato Amagiri and Julis-Alexia von Riessfeld, who have progressed to the next round of the Phoenix Festa after a long and strenuous battle with sisters Irene and Priscilla Urzaiz. Despite Julis and Ayato's best attempts, the fact that Ayato's powers have been sealed is no longer a secret. Now at a major disadvantage, the duo must come up with a plan if they are to have any hope of winning the Phoenix Festa. Only one thing is for sure: the troubles heading their way are only going to get more insurmountable from here on. [Written by MAL Rewrite]