image for an idle RPG game featuring popular anime characters from various series, dance game. The characters should be shown in chibi-style, with oversized heads and expressive features, and using their signature weapons or powers. The enemy should be a menacing figure, perhaps with glowing eyes or an ominous aura, that is able to challenge all of the heroes. The background should be a detailed and action-packed environment, such as a battlefield or ruined city, that suggests an epic battle is taking place. The overall style of the image should be manga-inspired, with dynamic poses, exaggerated expressions, and plenty of detail to capture the viewer's attention --ar 9:16 --s 50