Though I Am an Inept Villainess: Tale of the Butterfly-Rat Body Swap in the Maiden Court (Light Novel) Vol. 11

Kou Reirin, Shu Keigetsu, and Kin Seika have pulled off their grand welcome for Prince Nadir and overcome an overdose scare with a well-timed body swap. With the immediate danger past, the Maidens spring into action, infiltrating the brothel involved in the drug trade to nail down proof of their crimes. Yet when the girls come face-to-face with the brothel's highest-ranking courtesan, the so-called "heavenbloom," her true identity has them reeling--Seika most of all!