"Perpetrators - Bracelet of Shadows" is a story set in Jeosung, the world of the Koryo Hall of Adventures. This comic introduces readers to the Koryo Hall of Adventures through the eyes of a nameless protagonist seeking employment and potential glory in the dead of night. He is one of many who have been showing up in recent weeks, and the Administrator is starting to question the stability of Jeosung, and those adventurers' capability to address significant challenges. Complicating matters, a valuable treasure vanishes, prompting the Administrator to launch a comprehensive investigation.

This comic not only introduces the Koryo Hall of Adventures and its main characters to the readers, it also offers an adventure hook for readers who like tabletop roleplaying games. The Koryo Hall of Adventures was initially released as a campaign setting, and this comic is the perfect point of entry into the world of Jeosung.