A dangerous drug has flooded the streets of Libelle, but Menou isn’t the only one on the case. Who will uncover the truth first, and what is Manon Libelle planning?

Manon reveals a startling connection to Menou’s mentor and an even more startling power, but she's far from the greatest danger lurking inside Libelle… or even inside herself.

What are the consequences of an Executioner failing to eliminate her target? For Menou and Akari, the answer is more terrible than anything they could have imagined.