The producers were unsure whether to cast a male or female actor as Maraich, due to his effeminate appearance. Mineo Maya's daughter Marie Yamada insisted that Maraich be played by a male actor, and so the male Hiroki Sana was cast.
To prepare for his role, Hiroki Sana read the entire "Patalliro" manga comic (as of 2017, 90 volumes).