tds 700, hiiragi tsukasa, kasuga ayumu, azumanga daiou, lucky star, derivative work, highres, 1girl, artist name, blush, brown eyes, brown hair, clenched hand, cosplay, hair ribbon, hiiragi tsukasa (cosplay), long hair, neckerchief, official art inset, pink neckerchief, pleated skirt, red sailor collar, red skirt, ribbon, ryouou school uniform, sailor collar, school uniform, shirt, simple background, skirt, striped sleeve cuffs, white shirt, yellow ribbon