Chapter 109 of Echoes, titled The Ultimatum, followed at 9:07 AM. Silas delivers a chilling threat: I know about your sister. You have 24 hours. Kenji faces an impossible choice — expose himself by going to authorities, do nothing and risk his sister's fate, or comply and give Silas what he wants: Prometheus. The chapter explores the classic tension between personal safety and protecting loved ones, with the AI entity Prometheus at the center of the conflict.