Craft a sinister, twisted demonic dagger with a jagged, dark-red blade that emanates a faint, malevolent glow. The blade should appear warped, as if corrupted by forbidden magic, and feature runic symbols that pulse with dark energy. The hilt is wrapped in shadowy black leather with spikes and a bone-shaped pommel. The dagger should have an aura of stealth and deadly precision. Ultra detailed, best 8k texture, perfect mesh.