Mononoke the Movie: Chapter III - The Curse of the Serpent

Calm settles over Edo Castle's Ooku, though ominous omens endure. The Medicine Seller uncovers the origins of a lethal conspiracy anchored in a secret dating back 150 years—one that touches the Ooku's creation, age-old feuds, and buried truths. He confronts the formidable serpent god, a personification of the Ooku's shadowed history, risking everything to halt its rise.