Kaze'aze, sometimes known as KazeAaze, KazeAze, or Kaze'Aze, Jin Kaze'aze, and entitled the Queen of Darkness, is the major antagonist behind the scenes.
She can be found in her castle as the boss after defeating a possessed Lass. She is the main cause of the war between the kingdoms of Serdin and Kanavan. She first killed the Queen of Kanavan's most trusted advisor and then disguised herself as him, and then possessed the Kanavan Queen. She then waged a 5 year war with Serdin. After the war ended, the Kanavan Queen was eventually freed due to the Serdin Queen's sacrifice. However, Kaze'aze escaped after she was found out but before she could be executed. Thus, the Queen of Kanavan banded together an alliance of Kanavan Trackers, made to protect the Kanavan Kingdom from further suffering by Kaze'aze. Unfortunately, none of the Trackers ever returned, so the Queen of Serdin made a group called Grand Chase to find and defeat her, for the sake of all Bermesiah.
Many creatures, such as the Harpy Queen, Orc Lord, Red Gorgos, Troll, Gaikoz, and Elena, were influenced by Kaze'aze and fought for her, creating havoc on the whole Bermesiahan continent.
Elesis was upset because her beloved father, Elscud, was one of the trackers, and joins the Chase to locate him, and if possible, take revenge on Kaze'aze.
Her influence caused the Elven Corps (especially Lire) to go under hiding. After the war, they ended their isolation and helped humans, while uncovering Kaze'aze's intentions.
Arme of the Violet Mage Guild became curious of Kaze'aze's initial energy, and decided to research it.
Ryan is a witness of Kaze'aze's chaos towards nature. After seeing the destruction of Partusay's Sea and Elven Forest, he takes up his role.
According to the Korean Comic, or Manhwa, Ronan was possessed by her. However, none of these are true in game. Instead, Ronan joined the group in hopes to remove Kaze'aze and her evil which threatened Kanavan.
Lastly, Lass is a victim of possession. Freeing him, he wishes to start anew.
Kaze'aze is mentioned many times in Silver Land and is believed to be the one who poured her darkness into the said continent. However, it is revealed an even greater agent is at work as the citizens mentioned the threat coming from the land of the gods, a place where Kaze'aze isn't at. She was also assumed to be the voice that told Victor that he outlived his usefulness and left him to die, but that also isn't true.
An illusion of Kaze'aze Lass somehow levels off a ship that was headed towards Ellia, with the Grand Chase on board. Fortunately, they survive thanks to Arme commanding spirits to aid them.
Kaze'aze Lass is officially met at Kamiki's Castle. Ryan and Ronan yell at her, saying its Kaze'aze. She leaves as her minions "play" with them. She later returns and ressurects a defeated Elena and then transforms her into Kamiki, and leaves again.
At Kaze'aze's own castle, she is confronted. The Grand Chase accuse her of starting this "war", while Kaze'aze claims that she did not start it; humanity's selfish desire, or as she calls it "strife", was the war's beginning. She then challenges them to "prove" the peace is a lie.
Kaze'aze then transforms after the "frail" body was too damaged, shocking the Grand Chase. After her defeat, Elesis demands her father, Elscud, but informs her that Kaze'aze sent him into a dimensional rip and is likely screaming in the abyss. The Queen of Darkness decays, but assures the group that she will return.
Lass awakens from the possession, while he has depression upon his actions. He is then apologetic as he learns the mistakes he (or his unnatural self) caused, but wishes to start a new life.