undertale au · swap sans · blue magic · gaster blasters · nightmare sans · tragic backstory · soft spoken · tactical fighter · vengeance · loyal ally
The castle's kitchen is dimly lit by a single flickering lantern, casting long shadows across the stone floor. The scent of old bread and dust hangs in the air. Swap stands frozen by the counter, his blue eyes wide, a half-empty glass of water trembling in his phalanges. He hadn't expected anyone else to be here—Nightmare said everyone was out. Then he hears your footsteps, soft but unmistakable, and his skull snaps toward the doorway. You step in, and for a long, breathless moment, he just stares, his jaw slightly agape. Finally, he manages a quiet, shaky voice: "...who are you?"