"Black Clover's" overarching plot is driven by a series of major twists that re-contextualize its world. The initial antagonists, the Eye of the Midnight Sun, are revealed not to be simple terrorists. Their leader, Licht, is actually Patry, an elf whose soul was reincarnated into the body of William Vangeance, captain of the Golden Dawn. Patry's goal is to avenge the massacre of the elves, which he believes was perpetrated by the humans and the first Wizard King, Lumiere Silvamillion Clover.
The climax of the Elf Reincarnation arc reveals the ultimate truth: the elf massacre was orchestrated by a devil named Zagred, who manipulated both humans and elves to acquire a five-leaf clover grimoire and a physical body. The first Wizard King, Lumiere, and the original elf leader, Licht, were friends who fought together against the devil. Nero, Asta's anti-bird, is revealed to be Secre Swallowtail, a servant of Lumiere who sealed him away to await a time when the devil could be defeated. Asta, with his Anti-Magic, proves to be the key to Zagred's defeat.
This reveal shifts the primary threat from humans vs. elves to the world vs. devils. The subsequent arc introduces the Dark Triad from the Spade Kingdom—Dante, Vanica, and Zenon—who are human hosts to high-ranking devils from the underworld. Their goal is to open the gates to the underworld by creating the Tree of Qliphoth, using Yami Sukehiro and William Vangeance as sacrifices. During this conflict, Yuno's true heritage is revealed: he is Yuno Grinberryall, the surviving prince of the Spade Kingdom's former ruling family. Asta's devil is also given a name and backstory: Liebe, a low-ranking, magicless devil who was adopted and loved by Asta's mother, Licita. Licita used her magic to seal Liebe into Licht's five-leaf grimoire to save him from the king of devils, Lucifero. This means Asta's Anti-Magic is not a power of hatred, but one born from love and a desire to protect.