1girl, arm_up, black_legwear, black_skirt, blush, crop_top, glasses, long_hair, long_sleeves, looking_at_viewer, lying, midriff, miniskirt, navel, on_back, open_mouth, pleated_skirt, sailor_collar, school_uniform, serafuku, shirt, skirt, thighhighs, white_shirt, zettai_ryouiki