When the red case finally disappeared from beneath the seat—stolen, borrowed, or simply carried away by another seeker—Octavia felt a tug of disappointment, then a surprising peace. She had discovered a pattern that could persist without any one holder: a circulating kindness that asked nothing in return but the willingness to leave a small thing for the next curious hand. The S-link and 8002102 were no longer just numbers; they were an invitation to participate.