A plague-like wind blows across the arid, sandy expanse of a post-apocalyptic Japan. As it sweeps over the living and nonliving alike, rust is all that remains in its wake. The cause of the catastrophic state of the world is believed to be mushroom spores. Bisco Akaboshi, known as the "Man-Eating Mushroom," is a wanted criminal archer whose arrows instantly grow mushrooms wherever they land. However, he is in truth a "Mushroom Protector," a person who spreads fungi in order to enrich the land and return it to its previous state. Alongside the crab Akutagawa and young doctor Milo Nekoyanagi, Bisco ventures through the wastelands of Japan searching for the legendary "Sabikui"—a panacean mushroom said to devour all forms of rust.

As Yumeko Jabami's fame grows and the reputation of the student council dwindles, Kirari Momobami decides to revolutionize the group. To this end, she announces an election for its next president. The rules are simple: each student in the school receives one chip. Whoever has the most chips by the end of thirty days becomes both the new president and the head of the Momobami clan. Upon receiving news of this development, the Momobami branch families spring into action. Eleven transfer students arrive at Hyakkao Private Academy, each aiming to lead both the school and the Momobami clan. Equipped with unique talents, they will compete to get as many chips as possible—but their chips are not the only things on the line. [Written by MAL Rewrite]

Ayakashi are strange, supernatural creatures invisible to the majority of people. Though most are harmless, some ayakashi attack humans to devour their life force. Exorcist ninjas are tasked with protecting people from these spiteful spirits. Matsuri Kazamaki is a young exorcist ninja born to a prestigious clan. His childhood friend, Suzu Kanade, is an ayakashi medium—an individual with immense vitality that attracts ayakashi. Matsuri deems all ayakashi threatening and wishes to keep Suzu as far from them as possible, but this clashes with her desire to remain close to them. One day, the pair encounters Shirogane, the "King of Ayakashi," who is hellbent on consuming Suzu. As she is about to be eaten, Matsuri comes to the rescue and manages to seal the ayakashi's powers—but not before Shirogane takes revenge by turning him into a girl! Until he finds a way to transform back, Matsuri must adjust to his new, peculiar lifestyle while fighting against hostile ayakashi. Moreover, Suzu is now conflicted about her feelings toward Matsuri—further plunging their relationship into a state of ambiguity.

Although Fairy Tail has been disbanded and its members are now spread far across Fiore, Natsu Dragneel hasn't given up on reuniting the guild he and others once called home. Along with his companions Happy and Lucy Heartfilia, he will stop at nothing to keep Fairy Tail and its fiery spirit alive even as they face their most difficult trial yet—the invasion of Fiore by the Alvarez Empire's immense army and their all-too-familiar ruler. [Written by MAL Rewrite]