Part 3, Book 1: The Demon of Ten Winds

General Description
The eleventh book in the series, "Black Crown & The Demon of Ten Winds," depicts the events in which an ancient demon is released upon the world, plaguing it with destruction and sickness. In order to stop the threat, Zane must team up with Serena Roronoa, an angel tasked with location the released demons.

Set in the year 2027, the book begins when Serena Roronoa runs into Zane Euphoria, locking into a battle with him upon detecting that he's a devil. After losing the battle, Serena is forced to reveal her intentions, realizing that the both of them are after the same thing.