[DeepL Translation - needs review] Volume 1 Introduction: In the fifth year of the Taisho era (1916), multiple check frauds occur in the imperial capital, Tokyo. Blackened violets were found near the victimized stores - and the violets were found to be blackened. Shirakiku, with her unapproachable beauty, and Hanamori, a young man who is a dentist by profession, take on the challenge of solving a case involving a parasitic plant called "i-kaku," which grows by feeding on the malice of others...
