Create a dramatic 9:16 painterly anime concert illustration seen from behind the performers onstage. Show four young adult female band members standing shoulder to shoulder at the front of a huge fictional indoor arena, arms around each other in a triumphant post-performance moment. The camera is slightly behind and below them, facing the audience and a giant venue screen. The atmosphere is dazzling and emotional, filled with dense blue-and-gold confetti, sparkling particles, and strong white stage spotlights from above. The crowd fills the entire arena as a sea of tiny glowing blue lights. At the center top, a giant rectangular screen displays elegant serif concert text: [Band Name], "1st LIVE at 日本星光ホール", [Concert Date], and "SOLD OUT". On both upper side walls of the arena, show the large fictional venue name "日本星光ホール". The four performers wear matching dark stage outfits: black or very dark navy hooded jackets with subtle decorative back prints, short pleated skirts, and modest live-performance styling. Depict the four members distinctly from left to right: 1) short wavy silver-lavender hair holding a bass guitar slung over her shoulder; 2) long straight black hair holding a red electric guitar; 3) fluffy shoulder-length blonde hair holding a dark guitar; 4) brown hair in a high ponytail, no visible instrument, raising one arm high and holding a drumstick or baton in celebration while the other arm wraps around the blonde member. Show their backs and silhouettes rim-lit by stage light, with soft highlights on their hair. Include stage equipment: a microphone stand and part of a bass neck at the far left, plus a visible drum kit with cymbals at the right edge. The glossy reflective stage floor is covered with scattered confetti and several blue flower bouquets near the bottom foreground. Use rich midnight blues, violet shadows, warm golden sparkles, and cinematic bloom. The mood feels like a sold-out dream performance finale, sentimental, victorious, and breathtakingly luminous. Avoid real venue logos, real band names, real anime franchise references, real idol groups, copyrighted characters, QR codes, URLs, or platform UI chrome.
Output aspect ratio: 9:16.
9:16 ・ 4K
