Minor characters in Tokyo Revengers play a significant role in shaping the narrative by providing support, adding depth to the story, and influencing the development of the main characters. These minor characters often have their own unique backgrounds, motivations, and relationships with the main characters, which can lead to unexpected plot twists and conflicts that drive the story forward. Additionally, minor characters in Tokyo Revengers can also serve as catalysts for character growth and change, as their actions and decisions can impact the main characters' journeys throughout the series.