(背景)アイドルコンサート会場：(Background) An idol concert venue

Anime style wide shot of an idol concert stage in a Japan dome arena. Pink and cyan spotlights sweep the floor. LED screens above and flanking the stage show synced visuals — countdown timer, star motifs, track info in matching colors. Audience rows glow with pink, orange, white, and blue penlights. Confetti on floor, balloon arches, stage fog, lens flare.