1girl, alternate costume, bangs, black socks, blazer, blue sailor collar, blue skirt, blush, brown eyes, brown hair, collared shirt, cosplay, electric guitar, from behind, full body, green jacket, guitar, hair ornament, hairclip, hirasawa yui, instrument, jacket, k-on!, kita high school uniform, kneehighs, long sleeves, looking at viewer, looking back, necktie, parody, parted lips, pleated skirt, red necktie, sailor collar, school uniform, serafuku, shirt, short hair, simple background, sitting, skirt, socks, solo, suzumiya haruhi, suzumiya haruhi (cosplay), suzumiya haruhi no yuuutsu, uguisu (happy turn), white background, white shirt, winter uniform