knight1208, ui (blue archive), blue archive, absurdres, ai-assisted, commentary, highres, 1girl, armchair, black hair, blue hairband, blue neckerchief, book, brown cardigan, cardigan, chair, closed eyes, closed mouth, cowboy shot, crossed bangs, frown, hair between eyes, hair over shoulder, hairband, halo, holding, holding book, indoors, long hair, long skirt, long sleeves, low twintails, neckerchief, on chair, open book, pleated skirt, sailor collar, sailor shirt, school uniform, serafuku, shirt, sidelighting, sidelocks, sitting, skirt, solo, twintails, very long hair, white sailor collar, white serafuku, white shirt, white skirt, yellow halo