Samurai Flamenco is a story about the intersection of community and justice. The main character, Hazama Masayoshi, is intent on living out the ideals he learned from the hero stories that captured his imagination as a child. Their values guide his actions, so much so that he decides to become one himself, under the moniker Samurai Flamenco. As he navigates this choice, he begins to learn that heroes and villains are parts of their community, not forces outside of it. This causes him to re-evaluate what justice means to him and how he wants to practice it. This process closes the gap he sees between himself and his community, has him reject violence, and roots his sense of justice in love and empathy rather than punishment.
According to the logic of the story, the world around Masayoshi is being shaped by his unspoken desires (at least until the final arc). This means a viewer can retroactively read revelations about Masayoshi as a character onto how the narrative develops. To put it lightly, at the beginning of the story, Masayoshi is a highly privileged individual. He was scouted as a model in high school and lives in a nice apartment at the top of a building, with sufficient wealth to have an extensive collection of hero paraphernalia. This distance between him and the street is a very literal barrier that serves as a metaphorical one as well. Masayoshi is well-meaning, but his wealth, fame, and isolation from his community restricts his empathy. He sees his role as a hero as distinct from being a normal person.