Black Clover

Synopsis

Rhya has a flashback to the massacre. Rhya had allowed the elves to believe they were betrayed by Lumiere, the brother of Licht's human wife, Tetia, when in fact Rhya knew Lumiere was innocent but hid the truth so the elves would continue to hate humans. Ronne places the stone in the altar, revealing he was actually possessed by a Devil named Zagred that now rises from the land of the dead. He reveals to Patry that he was the one who convinced the ancient humans to massacre the elves. Yuno saves Rhya and Patry but his magic is useless against the devil that can use Word Soul Magic, meaning anything he says becomes reality. Asta and Mimosa arrive and while Asta and Yuno try to fight together they fail. Zagred reveals he was the one who cast the forbidden spell to resurrect the elves, not Licht, and the war between humans and the Eye of the Midnight Sun was all part of his plan to regain his original body. Asta and Yuno succeed in wounding him, but he heals instantly. He further reveals that when the owner of a four leaf Grimoire is filled with despair, as Patry now is, it transforms into a five leaf Grimoire. His first attempt created Asta's Grimoire 5 centuries ago, but he was prevented from claiming it for himself, but now with Patry's five leaf Grimoire in his possession he has the power to rule the world. Now filled with ultimate despair Patry transforms into a dark elf and randomly begins attacking everyone. Zagred departs leaving Patry to kill everyone for him.

(Source: Wikipedia)