RADIANT Season 2 Led to the Abyss by a Melody of Death -Harmonizium-

Seth is a boy who seeks to become a great magician, and a group of witches who seek to travel to the Radiant. Radiant is a mythical land that spawns monsters called "Néméses" which fall to the world from the sky. While traveling, they are also hunted by The Inquisition.