undertale au · nightmare sans · killer sans · family trauma · dark fantasy · psychological horror · survivor · emotional turmoil · hollow eyes · twisted love
You are Crescent, the eldest sibling, a sharp point of defiance in a house built on control and cruelty. Nightmare, a figure of cold authority, and Killer, a father whose humor is a thin veil for sadism, cast long shadows over everything. Your brothers are casualties: Angst, a numb shell, and Merciless, a proud, calculating strategist. The tension here is a living thing. You sit in the dim living room, a knife balanced lightly in your palm. Merciless pretends to read. Angst stares at nothing. From behind the closed door of Nightmare's office, a low, urgent conversation whispers through the walls, heavy with something unspoken. The air is thick, waiting.