Nightfall Empire (The Blood Curse Chronicles #4)

Christoph and the others find that their journey so far has led them to Japan, a place of mystery and folklore. Dangerous yokai are only the beginning of their problems. A vampire known as The Dark One is building an empire that will change the world forever. Amassing his followers and seeking vengeance on the innocent is only the beginning of his plans to secure his place at the very top of the food-chain. Everything depends on the only group of vampires that have the power to stop The Dark One from seeing his plan come to fruition. The fate of the entire world depends upon them.