1girl, ahoge, blush, breasts, brown_hair, cameltoe, covered_nipples, hair_ornament, hairclip, long_sleeves, lying, medium_breasts, on_back, on_bed, one-piece_swimsuit, open_mouth, pillow, school_swimsuit, school_uniform, serafuku, short_hair, sleeping, solo, spread_legs, sweat, swimsuit, swimsuit_under_clothes