A small, cylindrical glass vial filled with a dark, viscous blood-like substance. The glass is slightly frosted with subtle imperfections and scratches, indicating repeated use or age. The blood inside appears thick and slightly luminescent under light, with a deep crimson hue that darkens towards the edges. A simple, worn cork stopper seals the top, and the vial is labeled with faded, handwritten markings suggesting its origin or contents.