Ushio Aotsuki is the main protagonist of the anime and manga series 'Ushio to Tora.' He is a brave, determined, and strong-willed high school student who stumbles upon a mythical beast known as Tora, which has been pinned to a rock by the legendary Beast Spear for 500 years. Ushio's encounter with Tora sets off a series of supernatural events, leading him to fight various yokai and protect humanity. Throughout the series, Ushio grows as a warrior and person, forming a complex bond with Tora as they work together to face greater threats.