Beyond Kiryu, Yakuza Kiwami features a memorable cast of supporting characters who drive the narrative and add depth to the world of Kamurocho. Understanding their roles and relationships is crucial to appreciating the story.
- Akira Nishikiyama: Kiryu's sworn brother, whose transformation is central to the plot.
- Goro Majima: The Mad Dog of Shimano, Kiryu's eccentric rival and a key figure in the Majima Everywhere system.
- Haruka Sawamura: A mysterious young girl who becomes Kiryu's adopted daughter.
- Shintaro Kazama: Kiryu's foster father and patriarch of the Kazama Family.
- Yumi Sawamura: Kiryu's childhood friend and love interest, whose disappearance sparks the main plot.
- Futoshi Shimano: The brutal patriarch of the Shimano Family, a major antagonist.
- Reina: Owner of Serena, a bar frequented by Kiryu and his friends.
Each character plays a vital role in shaping Kiryu's journey and the unfolding drama.