Anime Band Concert Announcement Banner

High-energy anime idol band concert announcement banner in a wide horizontal composition. Top third typography features a prominent bold white Japanese headline with thick black drop shadow in rounded sans-serif lettering: 「[ChatGPTによる画像生成が大幅アップデート!]」, with a smaller centered subheadline below in white with black outline: 「[GPT-Image-2が無料で使える]」. In the lower half, five anime band members stand in front of a glowing circular gold spiral emblem. Center foreground: an energetic idol girl with [golden blonde] twin ponytails, amber eyes, star accessories, and a yellow cropped jacket, joyfully holding a drumstick. Left of center: a pink twintail vocalist in a frilly idol dress holding a microphone, face clearly visible. Three members have rectangular blurred face masks: the blue-haired keyboardist on the far left, the dark green-haired bassist right of center, and the black-and-purple-haired electric guitarist on the far right. Setting: concert stage with visible drum kit, keyboard, and purple electric guitar, flanked by two tilted futuristic neon UI monitor screens. Surrounded by gold stars, lens flares, floating musical notes, and sparkling confetti. Style: glossy anime promotional poster, saturated pink, yellow, and purple palette, vivid stage lighting, crisp line art.