The Promise Coast is a broad, prosperous belt of stormy ports, rail cities, marsh crossings, and rain-dark forests on Esterra's western sphere. Its wealth comes from engines that anchor and harvest continental magic lines, but every station displays a timetable for at least one route that no longer exists. Coastal councils, route companies, forest custodians, and arcane engineers compete across a region where travel is fast, dangerous, and never entirely trustworthy.