Mushi-Shi S00 E01 The Shadow That Devours the Sun

"The cure lies in the curse."

A powerful mushi appears during an eclipse, drawing other mushi to form a huge shadow that blocks the sun over a small village. Looking for clues about the mushi, Ginko meets a child who is afflicted by a strange disease that manifests itself when she is exposed to sunlight, and it does not take long for him to find out that both facts are related.