Jonathan Joestar is the noble and courageous protagonist of 'JoJo no Kimyou na Bouken' Part 1: Phantom Blood. Born into the wealthy Joestar family in 19th century England, Jonathan is a gentleman with a strong sense of justice and honor. His life takes a dramatic turn when his adopted brother, Dio Brando, seeks to usurp the Joestar fortune. Jonathan becomes embroiled in a battle against Dio's malevolent ambitions, utilizing the ancient martial art of Hamon to combat supernatural threats. His unwavering determination and moral integrity set the foundation for the Joestar legacy.