In a world where witches have declared war against humanity, two-thirds of the world falls under their control. The surviving human population gathered specialists with the power to track and destroy witches and called them Witch Hunters.
Tasha Godspell, also known as the "Magic Marksman," is one of the best hunters there is. Along with his sword-wielding Jack-o’-Lantern partner known as Halloween, Tasha puts his magical training and weaponry to good use, in his constant battles against witches. And yet, he cannot bring himself to fully hate the very witches he is tasked to destroy.
West (웨스트, Weseuteu) is one of the Four Great Witches and the witch said to be the strongest of all time. Although a pacifist, she once fought against Mordred and defeated her but West was eventually defeated and killed by the combined force of North and South prior to the Witch-Human War. North is currently trying to revive her; however thanks to the Death/Rebirth powers of East who bypassed the normal laws of Karma, West was reincarnated into Tasha Godspell.
Edea Florence and Tasha Godspell stare in disbelief at the power of Aria's Magic Arrow. Aria's magic combined with Aegis form a diagram which allows Aria's magic to be used at maximum force. Tasha recalls a lesson Edea taught him of channeled magic and magic diagrams. The former is much more powerful than non-channeled magic however useless in combat unless there is a Supporter to protect the Witch. Magic diagrams however are near impossible to use in battle due to the time spent creating one, the space needed, and because it is useless unless perfected. Edea recalls laughing as she tells Tasha a Witch using Magic Diagrams is a scam, but she never expected someone like Aria to appear.