Shika no Ou: Yuna to Yakusoku no Tabi

A former soldier named Van works in a mine under imperial rule after a devastating war. His quiet life is shattered when a group of diseased wild dogs attacks, killing everyone except Van and a young girl named Yuna. Determined to protect her, they attempt to live peacefully in the countryside but are hunted by hostile forces. Van seeks to discover the origin of the deadly, incurable disease spreading through the land and a way to stop it.