In contemporary Japan, Kazumi Mandanda Yoneyama, the child of a Black French father and a Japanese mother, has spent her life navigating the spaces between two cultures. She has grown used to the whispered judgments, the curious stares, and the casual remarks that mark her as different—as “hāfu,” a term she and others like her must constantly negotiate. Then her younger brother, Yuta, delivers a blunt confession: he has changed his name. He has dropped their father’s surname and adopted a purely Japanese one. For him, the decision is a survival strategy, a way to shed the constant feeling of being an outsider in the country where they were born and raised. For Kazumi, it reopens wounds she had tried to bury. His choice forces her to confront the everyday microaggressions and institutional biases she has always faced—being asked where she is “really from,” being treated as a novelty or a curiosity, and the quiet hurt of never fully belonging.

The story unfolds as a series of interconnected portraits, moving beyond Kazumi and Yuta to explore the lives of a circle of mixed-race friends and acquaintances. Sayoko Sekiguchi, a beautician with a Chinese mother and a Japanese father, has long hidden her heritage from clients and coworkers, struggling with a sense of internal exile that no one around her seems to notice. Another thread follows Lucia, a young woman of Filipino and Japanese descent, and her older half‑sister Alexandra, whose experiences in school reveal the sharp edges of casual prejudice. Even those who are not mixed‑race are drawn into the narrative: a woman who makes thoughtless comments about someone’s background is forced to sit with her own discomfort and guilt, illustrating how easily the line between perpetrator and bystander can blur.

Set against the backdrop of a society that often prizes homogeneity and treats difference as either exotic or suspect, the manga weaves together moments of humor, anger, and tenderness. It does not offer easy resolutions. Instead, it insists on the difficulty of coexistence—the work of acknowledging that understanding may never be complete, yet the effort to hold space for one another remains essential. Through each character’s search for a place where they can simply exist without having to explain themselves, the story becomes a quiet but determined argument for the wholeness that can be found in the very thing others dismiss as “half.”