Bruno Bucciarati makes his first appearance as a member of the fictional gang "Passione," interrogating Giorno Giovanna about the death of another gang member; "Weepy Eye" Luka. Afterwards, Giorno convinces Bucciarati to help him overthrow the boss of "Passione," in a plot to take over the gang. Eventually defecting from "Passione," Bucciarati leads a group of rogue gang members against the boss, who is revealed to be a man named Diavolo. As a child, Bruno was born in a poor fishing village, but he looked up to his father because of the love he had for his family. When his father became mixed up in the drug business and was badly injured, Bruno protected his father from the people that were trying to kill him, by killing them himself. This led him into the world of gangsters. Even though he was a member of "Passione," he had a kind personality; many people came to him for help. Sticky Fingers is the name of Bucciarati's Stand. It has the ability to place a fully functional zipper with a touch. For example: Sticky Fingers can hit a wall, placing a zipper on it. It can then open the zipper, allowing entrance through or into the wall. Its ability is not limited to inanimate objects; it can be used on humans. Bucciarati is able to use its ability on himself. Its ability can also be used offensively, to take things apart, or to mismatch things. Bucciarati delivers his catch phrase while his Stand beats his opponents senseless with its fists. He begins stringing "Ari ari ari" to its rapid punches, saying "Arrivederci" on finish; "Arrivederci" meaning "Goodbye" in Italian.

Yotsuba Nakano is the fourth sister of the Nakano Quintuplets. She has a bright and cheerful personality. Yotsuba is the only sister who accepts Fuutarou from the start and wholeheartedly supports him in everything. Yotsuba is an active, cheerful and calm girl. She speaks in a loud, spontaneous and sometimes absent-minded manner. She is the type of person who can't say no to people who need help, and is mostly seen helping people, either directly or indirectly. Yotsuba is good at sports, the basketball club even asked her to join the team. Yotsuba's excellent sporting ability is shown, scoring in 7.9 seconds for a 50m sprint. Yotsuba is praised as a skilled player by a member of the basketball club. She also has excellent stamina and is a good runner. Yotsuba is the only known sister with excellent eyesight (Itsuki wears glasses and Nino wears contact lenses). Yotsuba got a part-time job doing cleaning-related jobs. Yotsuba is good at festival games. Yotsuba's excellent eyesight is shown again, when she is able to recognize the name tag on Nino's uniform from the second floor. Miku will notice if Yotsuba is lying to her, because according to Fuutarou, Yotsuba is bad at lying. Yotsuba's poor academic skills are first hinted at and shown when she gets a zero for a test. Yotsuba comments that she is the one most likely to repeat a year. Yotsuba's excellent eyesight and kind demeanor are first shown when Fuutarou drops his exam sheet and she returns it to him. (Source: 5Toubun no Hanayome Wiki)