Having narrowly avoided the collision with the asteroid, the Sidonia sets a course for the Lem system in order to wipe out the Gauna nest.

A long time ago, the people of Camaron Palace found themselves on the brink of destruction. Fortunately, they escaped it when Sir Aaron, the True Guardian of Aura, saved them. He sacrificed himself to stop a war between kingdoms. From that day on, a tournament is held every year to commemorate his noble deed.

Satoshi, a budding Pokemon trainer from Kanto, manages to win the latest tournament and is allowed to wield a staff said to have belonged to Sir Aaron himself. Lucario, the Aura Pokemon—who is also the servant of the True Guardian—emerges from the staff. However, remembering his last memory of his master abandoning him, Lucario runs away in confusion. 

Meanwhile, Pikachu, Satoshi's companion, is abruptly taken by a Pokemon named Mew to the legendary Tree of Beginning. Only Lucario knows the way there, but he is unwilling to trust humans after his master's betrayal. Even so, to save his partner, Satoshi and his companions must acquire all the help they need and travel to the Tree of Beginning, unfolding hidden truths from centuries ago.

[Written by MAL Rewrite]

Unbeknownst to most humans, a bizarre tournament is held to decide the next ruler of the Heavenly World. In this tournament, 100 Heavenly Beings known as the "God Candidates" are required to search among the middle school students on Earth, and transfer their powers to a student of their choice. The chosen ones will then battle each other, representing their God Candidates. The victor of this tournament will be awarded the "Blank Talent"—allowing them to choose any one unique ability they so desire—while the God Candidate they represent will obtain the position of "God" and become the king of the Heavenly World. Participating in this grand tournament is Kousuke Ueki, a middle school student who is given the power to turn trash into trees by his homeroom teacher, Kobayashi. Despite the concerns of his classmate, Ai Mori, Ueki embarks on a journey to pursue his own sense of justice after witnessing the people around him misusing their powers for selfish purposes. But as he encounters talented power users such as Seiichirou Sano, Rinko Jerrard, Robert Haydn, and Hideyoshi Soya, he realizes that achieving his goal might be harder than it seems. [Written by MAL Rewrite]

While saving a child from harm, otaku Asahi Ikusaba is transported to another world and believes he has reincarnated with cheat skills similar to those of the characters from his favorite games and novels. Unfortunately, reality strikes when an encounter with a powerful monster shows that he is still nothing more than an average person. In this moment of extreme danger, Asahi instinctively calls out to his overly doting sister, Maya, who appears out of nowhere, possessing the overpowered abilities he thought he had. Maya is ecstatic to see her brother again and resolves to use her newfound powers to protect Asahi no matter what. Together, the close-knit siblings attempt to find a way back home while enjoying their new lives. However, it soon becomes clear that their arrival in this world may have had a purpose. With the Demon King's overwhelmingly powerful army approaching, no one but Maya seems to be able to stand in its way.