Saruno Amakuni is the main protagonist of the anime and manga series 'Mr. Fullswing'. He is known for his impressive baseball skills and his eccentric personality, which often leads to comedic situations. Despite his lack of experience, Saruno is determined to become a top player, driven by his passion for the sport and desire to impress his crush, Torii. As the series progresses, Saruno faces various challenges but grows as both a person and an athlete, rallying his teammates with his indomitable spirit and tenacity.