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. 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 occupy nearly all of his activities and no action on his part isn't made without approaching him of learning the truth. That drive is sufficiently strong that he was willing to interrupt his sweet time with his love interest Yasuho to investigate Karera Sakunami.