Jigokuraku: Utakata no Yume

This book explores the backstories of several characters, answering questions about their pasts. It reveals the enemies faced by Gabimaru and Sagiri prior to their arrival in Shinsenkyo, the events that led the Aza Brothers to become bandit leaders, and the circumstances surrounding Yuzuriha's killing of Makiya shortly after reaching Shinsenkyo. It also delves into the reasons behind Tenza's admiration for Shion as his master during their time at the dojo. The content includes both well-known and lesser-known stories, offering insight into the characters' histories.