Ushio Okazaki is the daughter of Tomoya and Nagisa. She primarily appears in the anime series "Clannad After Story," based on the visual novel "Clannad."
Ushio is a curious and well-behaved girl. Her father Tomoya considers her to be boyish because of her love of baseball and preference of a robot toy to dolls. Ushio's mother Nagisa dies after giving birth to her, which causes her father to leave her in the care of her grandparents. When he returns to take care of her, she becomes ill and dies from the same disease that killed her mother. The end of the story and Ushio's fate depends on the number of light orbs the player collects.