Among all the beasts that roam the world, there are unique types of "ultimate species" that harbor immense strength and magical prowess considered to be at the top of the power scale. As such, many humans covet their abilities, leading some of these species to the brink of extinction. As a beast tamer, Rein Shroud can employ the assistance of various animals for many tasks, such as reconnaissance and logistics. By virtue of his ability, he joins a party led by the vile and manipulative hero Arios Orlando, only to be banished after six months due to his uselessness as a non-combative class. However, unbeknownst to the team that cast him away, Rein is an exception among beast tamers. His potential becomes apparent when he meets Kanade—a cat spirit who is also one of the ultimate species—and is able to form a contract with her. With Kanade by his side, Rein sets out on his journey as an adventurer, steadily rising up the ranks and meeting more ultimate species along the way.

High above the realm of man, the gods of the world have convened to decide on a single matter: the continued existence of mankind. Under the head of Zeus, the deities of Ancient Greece, Norse mythology, and Hinduism, among others, call assembly every one thousand years to decide the fate of humanity. Because of their unrelenting abuse toward each other and the planet, this time the gods vote unanimously in favor of ending the human race. But before the mandate passes, Brunhild, one of the 13 demigod Valkyries, puts forth an alternate proposal: rather than anticlimactically annihilating mankind, why not give them a fighting chance and enact Ragnarök, a one-on-one showdown between man and god? Spurred on by the audacity of the challenge, the divine council quickly accepts, fully confident that this contest will display the utter might of the gods. To stand a chance against the mighty heavens, Brunhild will need to assemble history's greatest individuals, otherwise the death knell will surely be sounded for mankind.

Touya Mochizuki grows accustomed to his new life in another world. Armed with his trusty smartphone, the teenager accepts small quests at his leisure while spending time with his new fiancées: Yumina Urnea Belfast, Yae Kokonoe, and twin sisters Linse and Elze Shileska. But even in a relaxing environment, Touya is only beginning to understand the responsibilities that come with these engagements. In addition to his romantic woes, the elder fairy Lean wishes to locate the remaining pieces of Babylon, the floating island that the mysterious Professor Regina Babylon created five thousand years ago. Touya reluctantly accepts her request and seeks out the teleportation circles that will lead to the islands. However, strange monsters have emerged—possibly powerful enough to destroy the world. In order to save the second life he was given, Touya must weaponize ancient technologies to fight these monsters—all while balancing his overwhelming number of relationships.

In 1868, Dario Brando saves the life of an English nobleman, George Joestar. By taking in Dario's son Dio when the boy becomes fatherless, George hopes to repay the debt he owes to his savior. However Dio, unsatisfied with his station in life, aspires to seize the Joestar house for his own. Wielding an Aztec stone mask with supernatural properties, he sets out to destroy George and his son, Jonathan "JoJo" Joestar, and triggers a chain of events that will continue to echo through the years to come. Half a century later, in New York City, Jonathan's grandson Joseph Joestar discovers the legacy his grandfather left for him. When an archeological dig unearths the truth behind the stone mask, he realizes that he is the only one who can defeat the Pillar Men, mystical beings of immeasurable power who inadvertently began everything. Adapted from the first two arcs of Hirohiko Araki's outlandish manga series, JoJo no Kimyou na Bouken follows the many thrilling expeditions of JoJo and his descendants. Whether it's facing off with the evil Dio, or combatting the sinister Pillar Men, there's always plenty of bizarre adventures in store. [Written by MAL Rewrite]