The tentatively named Josuke Higashikata is a quirky amnesiac determined to learn his true identity and his past.

Josuke is afflicted by extensive retrograde amnesia, lacking memory of himself or events prior to meeting Yasuho Hirose, but retaining various degrees of knowledge.[3] As such, Josuke is driven to discover who he was by investigating the circumstances of his presence in the beach prior to having been saved by Yasuho. That goal occupies nearly all of his activities, and no action on his part is made without attempting to reach the truth. That drive is sufficiently strong that he was willing to interrupt a rare moment with his love interest Yasuho to investigate Karera Sakunami.[4] After learning about his past identity, Josuke set for himself the new goal of retrieving the Locacaca branch and using the fruit to heal Holy Joestar-Kira.[5] He still demonstrates the same steadfastness in investigating the fruit and the whereabouts of the Locacaca Organization, with the addition of deferring more to Rai Mamezuku's opinions, deeming the plant appraiser's expertise about the fruit worth listening to. His determination to reach his goals is best illustrated when he willingly steps into a rain made deadly by Satoru Akefu's Stand, letting his body be pierced by raindrops, including his head, just to reach the hospital.