Yui Takanashi is different. She sees things regular people can't see. Ever since the night her family perished in a house fire, Yui has been hunted by Demons and Dragons and stalked by Angels and Fairies.
A chance encounter with a seemingly ordinary school boy draws Yui into the enchanting and dangerous world of the spellbinders, mysterious people who control the powerful 'Astral Force', a magical ability like no other.
Yui and her new friends Shiro, Hiroku and Kiku are quickly drawn into an intricate plan to revive an ancient deity and destroy their world. It will take every ounce of strength they have to prevent a war and save the future. But how can they hope to defeat an impossibility powerful enemy, if they can't fend away their own demons first?
They will have to plunge into the darkest depths of Spellbinder history, and discover secrets about themselves they didn't even know they had, in order to protect everything they know and love.
But are the costs too great?
And will they all survive the trial in one piece?
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.