The Gentleman Demon Teacher of the Crossover-Verse

Where there is light, there is darkness. Yet beyond darkness, there is something darker still: the truth hidden deep within this world, and the demon lurking within that truth. This demon can grant any wish and even change the world. It has appeared once more, bringing its caprice and sweeping across the world again, claiming every soul in its full glory!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.