Hakuran no Kemono
One day, a deer beastman chatted with a human who had fallen into a hole and helped give him some food. Years later, that deer is caught and choked by a village chief, Ryan, causing him to lose his voice, though he's pretty sure Ryan or his brother are the one he spoke to in the hole years ago. The deer is nicknamed Shia by the village children, who play with him, but Ryan insists they are only keeping Shia to use him for his hair and antlers. Though Shia initially resents Ryan, his kindheartedness causes him to help Ryan multiple times, breaking down Ryan's walls, until Shia is kidnapped and it's up to Ryan to get him back. Although Ryan is a huge jerk, I like Shia a lot. Trigger warnings: violence, kidnapping, human(beastman) trafficking.
Ookami wa Hana no Kaori