What Magic Does The Antagonist Use In 'Black Clover: The Knight Of Treachery'?

"I won't let them live!" "I will be the strongest as a demon wielding warrior!" Arya Santanu, an ordinary young farmer from a village in the west of the island of Yawadwipa. He found a pitch-black stone as big as his body in a forbidden forest. Little did he know that the stone was a dimensional prison for a top-level demon named Asura.  Unexpectedly, Arya Santanu made a promise with the demon Asura to avenge all his demon brothers. This brotherhood of demons formed a sect of criminals in the land of Yawadwipa. They are known as the group of Thirteen Black demons.  Arya Santanu's hatred intensified when the Thirteen Black Demons destroyed his village and killed his beloved brother. What was originally a one-sided agreement turned into a grudge.  How can Arya Santanu become the strongest? follow the excitement only in the devil's hand knight.

Mayari Alverno is an assassin in her world of blood and death. Even though she longed for a change, she couldn't break the shackles of slavery that bind her to her ruthless father that repeatedly abuse her until she drop dead. Unexpectedly, a powerful sorceress from another world, named Helen, came to her aid and offered her an apprenticeship that she couldn't turn down. Mayari now lives with the sorceress in the world that she haven't dwell, a world of magic and mystery that never failed to amuse her. But peace is a fragile thing that can always be broken easily. Even though in a new world and a new life, troubles are always looking for Mayari that includes her being eyed by the dark forces of magic because of her outstanding ability, and involuntarily being knotted by the Royal Family's problem, risking her life a couple of times to death. Will she regain peace in the end? or be thrown in hell to repent for her sins?

CLOVER: The Witch’s Forbidden Mate For two hundred years, witches and werewolves have lived as sworn enemies, bound by bloodshed, betrayal, and a curse no one has been able to break. Clover has spent her entire life believing she was ordinary. Hidden among humans and haunted by strange dreams, she never imagined that the mysterious powers growing inside her would reveal a truth powerful enough to change the fate of two worlds. Kael Blackthorn, the feared Alpha of the Shadow Pack, has dedicated his life to protecting his people and destroying every witch who threatens them. But everything changes the moment he discovers that the woman destined to be his mate is the last surviving Moon Witch—the very enemy he was raised to hate. As an ancient darkness awakens and long-buried secrets come to light, Clover and Kael are forced into an uneasy alliance. Together, they must face ruthless enemies, deadly betrayals, and a prophecy that foretells the fall of both witches and werewolves. With war on the horizon and destiny pulling them together, they must decide whether love is strong enough to heal centuries of hatred—or whether their bond will become the spark that destroys everything. In a world where magic has a price and loyalty is tested by blood, one forbidden love may be the only hope… or the beginning of the end.

Bound in Black Magic An enslaved human. A broken Alpha King. And a past life wrapped in blood and dark sorcery. Brutalized and trapped in a ruthless kingdom, she never expected to feel an undeniable pull toward the Alpha King—nor did she expect him to violently reject it, still haunted by the murder of his former mate. But when a mysterious witch uncovers a chilling truth, everything shatters: she is the reincarnation of the luna's killer, reborn without her memories. When her memories finally flood back, guilt forces her to run. Meanwhile, the king’s cunning right-hand man poisons his mind with suspicion. Catching her practicing forbidden black magic—the very weapon that took his mate—the blindfolded king banishes her to the shadows as a hated outcast. He thinks he has punished his enemy. In reality, he has just played right into the hands of the true monster: a half-wolf, half-witch hybrid who murdered the former luna to hide their affair and framed an innocent best friend to take the fall. Now, time is running out. To survive a web of deceit older than their hatred, the outcast girl and the grieving king must unmask the ultimate betrayal before the darkness consumes them both.

Eleina joined the Knights and became a candidate to becoming the next Magic Leader. She was put into a lot of mission that helped her grow as a mage, she was soing great until the news broke out.

Sheeran, a 16-year-old boy, lived until he was killed for a stupid reason. ( stupid reason & more in the prologue:v ) But it seems that fate had stored different things for him as after death, His soul transmigrated to another world inside a dead body of a boy with the same name and same facial features as him. He also found out that a mysterious black whirlpool seemed to be inside him and connected to his soul. After the short unfortunate first life, he starts living his second life with more suffering that he chooses himself to get stronger but with that also comes happiness he had never experienced. A smooth sailing second life of Sheeran starts with something mystical inside his body and other benefits of it that could make him stronger with some suffering. However...he didn't know that due to his soul ( That was supposed to return to the source of the universe after death but instead, it transmigrated by someone for some purpose and that caused an adverse effect like increasing misfortune on his soul ) The benefits he receives ultimately becomes the source of his second doom that is even worse than death. But...that's when the future revoked overlord is born.