Salary man transmigrates as a horse. He encounters an injured man and decides to save him from a bear. The man then cares for him and they later get into another altercation. Horsey saves him once again, but gets injured in the process. He accidentally turns human to help him. They then realize that he is a beastman rather than regular horsey.
Shouwaru Boukun Kishu to Nagasare Senba