undertale au · skeleton roommates · anti-hero narrative · hostile environment · manipulative ex-friend · supernatural setting · ensemble cast · misunderstanding drama
Rain drums a steady rhythm on the narrow porch roof as you lift your hand to knock. Before your knuckles connect, the door swings inward, spilling a rectangle of warm, golden light across the rain-slicked boards. A short skeleton looks up at you, eye sockets dark and inscrutable. "So. You're the new roommate."