By the opening decades of the twentieth century, Crestfall had become something far larger than the isolated colonial settlement Dalethia first positioned atop the Wound generations earlier. Railways cut through the outer districts. Factories expanded near the riverfront. Shipping routes connected the city to the broader northeastern economy. Immigrant populations, industrial labor, universities, nightlife, organized commerce, and civic infrastructure transformed Crestfall into one of the fastest-growing urban centers in the region.

Humanity had fully claimed the surface.

Yet beneath the visible growth, the city's deeper purpose remained unchanged. Crestfall still functioned unknowingly as a stabilizing structure surrounding the Wound itself. The density of human life, emotion, ambition, routine, architecture, and social order created a constant pressure system above the fracture. The city did not heal the Wound.

It compressed it.

During this period, one of the most influential urban development projects emerged through collaboration between the Glimmer family, Dalethia's hidden networks, and Sun-Hee's increasingly sophisticated understanding of social systems and environmental pressure. The district eventually known simply as The Glimmer began originally as an ambitious effort to create a structured social heart for the growing city: nightlife, gathering spaces, entertainment, movement corridors, music venues, restaurants, and dense human interaction layered intentionally together.

The district was designed to shine.

Savannah Glimmer's great-grandfather became one of the most important human architects behind the district's development. Publicly, he was remembered as an unusually visionary urban planner and logistical organizer who understood movement, visibility, crowd flow, and social energy better than most city officials of his era. Privately, he worked closely with Sun-Hee and indirectly with Dalethia herself, though he never fully understood the deeper cosmological purpose beneath the city's design.

He believed he was building a better district.

In truth, he was helping refine a containment organism.

The district's eventual nickname emerged partly from its lighting design and atmosphere. Early electric installations, polished glass, reflective signage, illuminated nightlife venues, and carefully layered streets created an unusually vibrant visual identity compared to the harsher industrial sectors surrounding it. Locals began referring to the area informally as "the Glimmer."

The family name fused naturally into the identity afterward.

Over time, the district became one of the defining social hearts of Crestfall itself: music, restaurants, bars, clubs, vendors, hotels, neon, nightlife, rumors, hidden meetings, private deals, and human momentum flowing together in endless circulation. To most residents, it represented entertainment and social life.

To Dalethia, it represented emotional architecture.

Sun-Hee increasingly treated Crestfall as a living system rather than merely a city. Infrastructure, sewer systems, hospitals, transit, district density, industrial pressure, nightlife flow, architecture, and emotional concentration all became measurable variables within her hidden models beneath the city. She understood earlier than anyone else that modern urbanization was changing the Wound itself.

The city was feeding it.

But also suppressing it simultaneously.

Dalethia saw something else entirely. For perhaps the first time since Catharism, she believed humanity had unknowingly created a civilization-scale structure sophisticated enough to coexist with the impossible without collapsing under it immediately. Crestfall no longer existed merely to conceal the Wound.

Crestfall was becoming symbiotic with it.

The Glimmer family itself gradually normalized into ordinary civic life over subsequent generations. Their connection to the district remained as local legacy rather than hidden authority. By Savannah Glimmer's era, the family history survived mostly as civic pride and fragmented stories about one ancestor who helped shape the city's social heart long ago.

The deeper truth remained buried beneath the city alongside everything else.

And beneath the growing lights of Crestfall's modern age, the Wound listened quietly to the rhythm of the city forming above it.