Anime Idol Band Announcement Banner

A vibrant anime-style social media announcement banner designed like a high-energy idol band concert poster. Horizontal composition with a dense, colorful layout and no empty space. Main text: Across the top, a large bold Japanese headline in thick white lettering with black drop shadow and slight 3D depth reading: "[ChatGPTによる画像生成が\n大幅アップデート!]". Directly underneath, centered, a smaller bold white subtitle with black outline reading: "[GPT-Image-2が無料で使える]". The text dominates the upper third and remains highly legible. Setting & Stage: A dazzling anime concert stage filled with golden sparkles, star shapes, lens flares, neon light streaks, confetti, glowing particles, and dramatic concert spotlights. In the center background, a large glowing OpenAI-style knot logo appears inside a warm golden circular light behind the performers. On the far left and right edges, include futuristic sci-fi UI monitor panels displaying colorful dashboards, circular interface graphics, digital controls, and audio visualizers. Characters: Exactly five anime band members arranged across the lower half from left to right: 1. Keyboardist on the far left: long blue hair, white blouse, seated or standing behind a synthesizer keyboard with a calm idol expression. 2. Vocalist at left-center: pink hair in twin tails with floral accessories, frilly pink idol dress, holding a black microphone while singing brightly. 3. Drummer and front idol at center-right foreground: energetic smiling girl with yellow-orange hair, star hair clip, yellow cropped jacket over a white outfit, pointing a drumstick forward toward the viewer, with a drum kit visible behind her. 4. Bassist/guitarist at right-center: dark green hair, black and green streetwear, holding a dark electric bass, positioned slightly behind the center performer. 5. Guitarist on the far right: black hair, gothic black outfit with straps and buckles, holding a purple electric guitar. Style: Polished Japanese anime key visual, idol band aesthetic, glossy digital painting, saturated vibrant colors, dynamic stage lighting, crisp line work, dramatic depth, warm gold and magenta highlights, celebratory tech-news tone. Exactly 5 characters and 2 visible text blocks. No extra logos, watermarks, or borders.