The game being themed around The Adventures of Pinocchio was decided in order to appeal to a wider fanbase, with director Choi Ji-Won noting that the original story had a dark tone and diverse backgrounds that the staff could use. The game being set in an environment similar to Belle Époque was done to "encapsulate a city's transformation from opulence to ruin" and convey "a period of unparalleled cultural and artistic prosperity, yet severe darkness and negativity".