Red eye

The red eye is a term for a particular star in the sky, whose real-life analog I am unaware of. Supposedly, this is the Great Auroch Bull's eye, according to legends. When the red eye is highest in the sky at the winter solstice, the demons famously reach their strongest state, and so sicknesses and nuisances are the most abundant. Thus in both Wolf Brother and Ghost Hunter, the main goal was to reach a destination before December 21st.