Rain and the Wolf is a BL visual novel inspired by Little Red Riding Hood. The story follows Rain, an aloof young man, who works as an apothecary with his father. One day, Rain's father sends him into the woods to gather some herbs, but Rain finds himself entrenched in his childhood memories and wanders off the beaten path.
While Rain is resting by the riverside, a sudden storm blows by and he gets caught up in a downpour. In the confusion, he falls and sprains his ankle, and passes out from the pain as the hour wears on. It seems inevitable that Rain will become food for the hungry wolves that prowl the woods, but fortune smiles on him. A passing young man, Zero, finds him, and takes Rain back to his home to recuperate — but there's a catch.
Zero is no ordinary man. He's a werewolf, and his designs on Rain might not be as innocent as it first seems.