A dramatic anime concert illustration seen from behind the performers onstage, showing 4 teenage girls standing shoulder to shoulder at the front of a huge indoor arena, arms around each other in a triumphant post-performance moment. The camera is positioned slightly behind and below them, facing out toward the audience and the giant venue screen. The atmosphere is dazzling and emotional, filled with dense blue-and-gold confetti, sparkling particles, and strong white stage spotlights pouring down from above. The crowd fills the entire arena as a sea of tiny glowing blue lights. At center top, a giant rectangular screen displays elegant serif concert text: {argument name="band name" default="ELEMAYU"}, "1st LIVE at 日本武道館", {argument name="concert date" default="2024.6.15"}, and "SOLD OUT". On both upper side walls of the arena, the large venue name "日本武道館" is visible. The 4 girls all wear matching dark stage outfits: black or very dark navy hooded jackets with subtle decorative back prints, short pleated skirts, and live-performance styling. Count and depict all 4 members distinctly from left to right: 1) a girl with short wavy silver-lavender hair holding a bass guitar slung over her shoulder, 2) a girl with long straight black hair holding a red electric guitar, 3) a girl with fluffy shoulder-length blonde hair holding a dark guitar, 4) a girl with 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, and a visible drum kit with cymbals at the right edge. The stage floor is glossy and reflective, 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 should feel like a sold-out dream performance finale, sentimental, victorious, and breathtakingly luminous, in highly detailed painterly anime style.