A dynamic anime concert illustration of 【Mio Akiyama-inspired high school bassist】 performing onstage at a school festival, shown from a dramatic low angle in a full-body near-portrait composition. She is a beautiful teenage girl with very long straight 【black】 hair whipping sideways in the motion of the performance, wearing a dark navy Japanese school uniform with a fitted blazer, white shirt, blue ribbon bow, and pleated gray-blue skirt. Her expression should be cool, serious, and focused. She is playing a sunburst electric bass guitar with a tortoiseshell pickguard, and it must be a true 【left-handed bass guitar】, with the neck extending to the left side of the image and her fretting hand positioned accordingly. The stage setting is an indoor school auditorium packed with students on the ground floor and balcony, with bright concert spotlights, ceiling trusses, floating music-note decorations, and confetti-like glowing particles in the air. Behind her is a large banner reading 【SAKURAKOU K-ON】. At the left foreground is a black amplifier stack with the logo “Ampeg” and the text 【桜高軽音部 K-ON! SAKURAKOU K-ON! BU】, and in the right background a drum kit with visible “YAMAHA” branding. Emphasize energetic live-performance motion, glossy instrument reflections, detailed crowd depth, dramatic stage lighting in purple and white, and polished high-end anime illustration quality, SFW.
