The main protagonist of [[JoJo no Kimyou na Bouken]] Part 4: [[Diamond wa Kudakenai]]. He is the illegitimate son of [[Joseph Joestar (old)|]] and [[Higashikata Tomoko]]. His [[stand_(jojo)|Stand]] is [[Crazy Diamond]].

Sports a large [[pompadour]] hairstyle, which he is fiercely protective of. His [[gakuran]] is often seen with [[brooch|brooches]] in the shapes of an [[anchor symbol]], a [[heart]], and a [[peace symbol]].

The "助" (suke) in his given name can also be read "jo". The Kanji in Higashikata (東方) can also be read as "Touhou", meaning "Eastern". So Jousuke's name can mean "Eastern JoJo".
東方仗助 仗助 仗億