Set in late-Edo Yokohama and the brothel district of Kozukiyoshi, this is a full-scale mystery that follows Isa as she investigates the truth behind her father’s death. The novel blends political intrigue, the world of the licensed quarter, and her relationship with the British naval officer Mason into a story with both historical weight and strong momentum.

To clear her father’s name, Isa goes straight into Yukaku Island.

When popular idol Sota Omine places highly at a bodybuilding competition after only three months of training, accusations of doping spread across social media. Rookie journalist Kentaro Matsumura is assigned to go undercover at the gym at the center of the scandal, plunging him into a world where muscle and deception intersect. Winner of the 70th Edogawa Rampo Prize.

In an era of rampant fakes, the story of truth begins.