Briarley by Aster Glenn Gray

An m/m World War II-era retelling of Beauty and the Beast.
During a chance summer shower, an English country parson takes refuge in a country house. The house seems deserted, yet the table is laid with a sumptuous banquet such as the parson has not seen since before war rationing.
Unnerved by the uncanny house, he flees, but stops to pluck a single perfect rose from the garden for his daughter – only for the master of the house to appear, breathing fire with rage. Literally.
At first, the parson can’t stand this dragon-man. But slowly, he begins to feel the injustice of the curse that holds the dragon captive. What can break this vengeful curse?