1girl, :o, ahoge, arm up, bangs, bed sheet, blush, cardigan, closed eyes, facing viewer, feet out of frame, greyscale, hair between eyes, long sleeves, lying, mole, mole under eye, monochrome, naga u, naga u-chan, on back, original, parted lips, pleated skirt, puffy long sleeves, puffy sleeves, school uniform, short eyebrows, sketch, skirt, sleeves past wrists, solo, split mouth, thick eyebrows