Final answer:
The man's main struggle in the medieval tale is accepting his dual nature as he grapples with being a werewolf and maintaining his human relationships.
Step-by-step explanation:
In the medieval tale described, the man's main struggle is accepting his dual nature. This is evident as he tries to manage the reality of becoming a werewolf against the backdrop of his human life and relationships.
His affliction leads to a betrayal from his wife, showcasing that his primary battle is with his own identity and the acceptance of his condition, rather than external factors such as seeking revenge or finding a cure. The narrative focuses on internal conflict and the challenges of personal acceptance amidst supernatural circumstances.