1girl, arm_up, bed_sheet, black_hair, black_skirt, blue_bra, blue_eyes, blush, bra, breasts, cleavage, collared_shirt, iwanishi, long_sleeves, looking_at_viewer, lying, medium_breasts, medium_hair, on_back, open_clothes, open_mouth, open_shirt, original, pleated_skirt, school_uniform, shirt, skirt, solo, underwear, white_shirt