Its a Trilogy by Jay Kristoff. It centers around a Steampunk Feudal Japan era and a Lotus called the Blood lotus which is the source of their fuel, drugs, and many other things. The Blood Lotus kills the land, and poisons the sky and sea. Rebels known as the Kage attempt to burn the lotus and rebel against the Shogunate and the Lotus Guild who control everything. It features Sci-fi and fantasy. Its a very interesting read for anyone interested.

Anyone else actually reading ths though? I myself am on the last book "Endsinger."