The veterinarian in With You and the Rain is a compassionate veterinary practitioner who operates a clinic near the residence of the protagonist, Fuji. He is a supporting character who first treats the animal You during their initial health check. His professional familiarity with You develops from that point onward. The veterinarian possesses a notable skill of deep intuition that extends beyond animals to include people and situations. He offers soft-spoken hints and thoughtful glances that add warmth and depth to his interactions with Fuji and You. His personality is gentle and perceptive, and his primary motivation is the care and well-being of the animals in his charge. While the story does not elaborate on his background or personal development, his role is to provide veterinary expertise and occasional quiet guidance as Fuji and You navigate their life together. His ability to quietly observe and offer subtle insights makes him a quietly supportive presence in the narrative.