He has lost all past memories of himself, including his name. "Josuke Higashikata" is a temporary name given to him. Because he has no memory, he is a man of many mysteries. He prefers physical pressure, such as sleeping wedged between a mattress and a bed frame, and has a knack for estimating height and distance by sight. Perhaps due to the gap in his front teeth, he is bad at eating liquids. His catchphrase when surprised is "Ore-ee?" (Me-ee?). He addresses girls with the "-chan" suffix. He generally has a laid-back personality but shows moments of anguish over his lack of memory. Because of this, he deeply treasures Yasuho, who first discovered him and has looked after him since. While Yasuho can get humanly angry at times, Josuke tends to idealize her a bit too much in his fantasies. He possesses the knowledge and general education of roughly a high school student. He has a bit of a dirty mind. When it comes to the brink of winning or losing, he becomes extremely emotional; he is surprisingly competitive. He has short black hair and usually wears a white sailor suit. Also, he has four testicles. His Stand is Soft & Wet.

A resident of Morioh Town. A 19-year-old freshman in the Department of Sociology. She has a side that spares no effort to help even strangers so that their families can live in harmony, possessing a somewhat poignant kindness. While running away from Joshu Higashikata, she discovered the naked, amnesiac protagonist, Josuke Higashikata, and took care of him. The Higashikata family recognizes her as Joshu's girlfriend, but they have only kissed once. Due to his recent poor personality, she doesn't think well of Joshu and even blocks his calls. She is a beautiful girl characterized by her distinctive pigtails and a miniskirt covered in flowers. She has pink hair. She generally has a kind personality and is the type to express her emotions honestly. Also, she is reportedly not very knowledgeable about sexual matters. She is somewhat prone to loneliness. Her Stand is Paisley Park.

The head of the Higashikata family, who runs "Higashikata Fruit Parlor" in Morioh Town. 59 years old. He champions "social service and giving back to the country and region." He became the guarantor for the amnesiac young man and gave him the name Josuke Higashikata. At first glance, he seems like a friendly, good-natured person, but he can be a bit arrogant and boastful about his position. He is very susceptible to flattery. His desire to protect his home and family is strong and unwavering. First person: I (polite) / I (casual). His Stand is King Nothing.

Norisuke Higashikata's wife and the mother of Jobin, Hato, Joshu, and Daiya. 52 years old. A beauty with a youthfulness that makes it hard to believe she is in her 50s. She is cold toward Norisuke, but she loves her sons and daughters so much she says she hasn't forgotten them for a single day. However, while love is love, she apparently cannot stand being looked down upon. Her Stand is Space Trucking.

The eldest son of Norisuke Higashikata. 32 years old. He is characterized by vertical scars from his eyebrows to his cheeks and very spiky clothing. His wife is Mitsuba, and his son is Tsurugi. His favorite car is a golden Lamborghini. He is obsessed with insects; his room is lined with countless specimens, and he buys expensive stag beetles while on business trips. His personality is that of a person who thinks every day is summer vacation. Otherwise, he is a shrewd businessman. He truly loves his wife and son. His Stand is Speed King.

The wife of the eldest son, Jobin Higashikata. 31 years old. Tsurugi Higashikata is her only son. She also works as an advertising model for the Higashikata Fruit Parlor. Perhaps because of that background, she pursues beauty. Her hairstyle is semi-long with a distinctive curl at the forehead. Her clothing—a sleeveless top, short pants, and a completely see-through dress-like overgarment—is quite, or rather, top-tier erotic. A good mother who cares for her family. Her Stand is Awaking III Leaves.

The child of Jobin and Mitsuba Higashikata. 9 years old. For certain reasons, he dresses as a girl, but he is actually a boy. Due to his age, it is difficult to distinguish his gender by appearance. He has a habit of unconsciously making puns. His sense of humor consists of cold, dry "old man jokes" that you wouldn't expect from a child, which ironically makes them funny. His personality is innocent and naive for his age, but he is sheltered. He likes Yasuho and does things like smelling her hair, touching places he shouldn't, and licking her legs. His Stand is Paper Moon King.

The eldest daughter of the Higashikata family. A 24-year-old beauty. She is a professional model and is popular enough to appear on magazine covers. However, her intelligence is quite lacking, to the point where Norisuke laments, "I didn't think my daughter was this stupid." She is obsessed with branded clothes and bags—a worldly person for better or worse. She wears tight-fitting clothes that emphasize her body lines. She has long straight blonde hair, with the ends gathered into arrow shapes. Her Stand is Walking Heart.

The second son of the Higashikata family. An 18-year-old university freshman. He has a side as an idol otaku. He is characterized by a bowl cut with the sides shaved. He always wears a bow tie and clothes with arrow marks on both shoulders. He is short-tempered, arrogant, snide, obsessed with sex, and greedy for money—a hopeless scoundrel with almost no redeeming qualities. He cares for his family and is deeply in love with his childhood friend, Yasuho Hirose. Occasionally, he shows a competitive instinct that shouldn't be underestimated. His Stand is Nut King Call.

The second daughter of the Higashikata family. 16 years old. A girl with a small frame and a cute, doll-like face. She is so cute that Josuke, when seduced by her, almost fell for it, momentarily forgetting Yasuho's existence. She wears a hood with ears. She is obsessed with fairness and hates being made to feel indebted to others. Her catchphrase is "nari." She believes that possessing memories is happiness. By the way, her chest is large for her age, and according to her, it's larger than Yasuho Hirose's. Her Stand is California King Bed.