Shika no Ou: Yuna to Yakusoku no Tabi

In the aftermath of a brutal war, former soldier Van toils in a mine controlled by the ruling empire. One day, his solitary existence is upended when a pack of wild dogs carrying a deadly and incurable disease attack, leaving only Van and a young girl named Yuna as survivors. Finally free, the pair seek out a simple existence in the countryside but are pursued by nefarious forces. Intent on protecting Yuna at all costs, Van must uncover the true cause of the plague ravaging the kingdom—and its possible cure.
(Source: GKIDS)

Note: The film received an early premiere at the Annecy International Animation Film Festival on June 14, 2021.