character: oumae_kumiko, character: kousaka_reina, character: kuroe_mayu, Full body shot in a V-formation composition, featuring three girls in a confident key-visual promotional pose against a clean soft gradient background with subtle warm tones. Oumae Kumiko, with short brown hair and brown eyes, stands forward-left, smiling brightly while cradling a gleaming golden euphonium with both hands. Kousaka Reina, with long black hair and purple eyes, stands centrally in the back, holding a golden trumpet firmly in her grip with a cheerful expression. Kuroe Mayu, with long brown hair and blue eyes, stands forward-right, holding a polished silver euphonium. All three are dressed in Kitauji High School uniforms, consisting of long-sleeved serafuku with sailor collars, neckerchiefs, and pleated skirts. The lighting is sharp and dramatic, creating a high-contrast key visual poster style with clean anime coloring, vivid textures on the metallic instruments, and a bright, optimistic atmosphere.
