The Prince in His Dark Days Vol. 3 (Kodansha, 2017)

Caught in the Act -- Plucked from her dreadful surroundings, Atsuko is still living as Itaru, a capricious and spoiled heir who ran away from his charmed life. Her co-conspirator, Ryô, teaches her that to pass as one of the elite, she must be cold and cruel. However, amid the ranks of the wealthy, she meets Daigo, a gentleman who shines like a true prince. Before long, Daigo sees through Atsuko's façade and makes a troubling request when she has no one to turn to…Meanwhile, Itaru struggles to forge his own life in a completely new world.