The rainwrought are aberrant descendants of a storm that fell from somewhere beyond the stars. They live by listening to water, reading the moods of clouds, and preserving memories in sealed vessels. To meet one is to encounter a person who may be compassionate, curious, and perfectly sincere while regarding the boundaries of flesh and self as temporary arrangements. In every rainwrought settlement, someone keeps watch for the return of the Black Rain, and every rainwrought wonders whether the next storm will reveal their destiny or erase it.

Rainwrought possess slender or densely built bodies whose proportions vary subtly from person to person. Their skin may be pearl-gray, blue-black, bruised violet, or translucent around the joints, with fine iridescent veins visible beneath the surface. Most have large, reflective eyes with narrow pupils, though some display clusters of smaller eyes along the brow, throat, or palms. Their hair resembles wet fiber, soft tendrils, drifting down, or short glassy filaments. A rainwrought's shadow may lag behind its movements by a heartbeat, ripple without wind, or briefly show a different posture. Their blood is dark and faintly luminous, and their bodies remain cool even in warm climates.

Rainwrought culture is built around the idea that every living thing is unfinished. Their rites of passage involve controlled exposure to strange environments, dream-sharing, and the public naming of a fear that the initiate intends to outgrow. Families are fluid, often consisting of birth relatives, adopted companions, memory-keepers, and people who have survived the same transformation. Elders preserve history through rain hymns, scent libraries, and blackwater mosaics that rearrange themselves when touched. The ancestry has no universal gender roles, and many rainwrought change their names or physical presentation after major life events.

Rainwrought do not usually worship gods as distant rulers. They venerate processes such as change, memory, hunger, weather, and decay, often personifying them as ancient intelligences. Some follow the teachings of Violet Morvane and believe the Black Rain is a sacred correction to a stagnant world. Others reject her entirely, fearing that her doctrine turns adaptation into obedience. Rainwrought tend toward neutral alignments, though individuals may be compassionate custodians, ruthless experimenters, or devoted servants of cosmic order.

Rainwrought settlements are organized around collection courts, where every roof, gutter, and basin directs water toward communal cisterns. Their buildings use black glass, porous stone, copper ribs, and living membranes that tighten during storms. Doors are often circular and without hinges, while windows are made to distort the outside world into shifting halos. Important structures are designed to be experienced through touch, echo, humidity, and scent rather than sight alone.

Rainwrought communities are cautious with outsiders but rarely hostile without cause. They often form strong alliances with sailors, apothecaries, scholars, and anyone who has survived a supernatural disaster. Many ordinary people find them unnerving because rainwrought etiquette includes prolonged eye contact, direct questions about death, and the exchange of small amounts of water as a sign of trust. They are sometimes mistaken for cursed humanoids or servants of alien powers. Rainwrought generally respond to such suspicion with patience, theatrical courtesy, or an unsettling display of their abilities.