1girl, blue_skirt, breasts, clothes_lift, hand_on_own_head, indoors, looking_at_viewer, lying, medium_breasts, navel, on_back, on_floor, open_clothes, open_skirt, panties, pleated_skirt, purple_hair, red_eyes, school_uniform, serafuku, shinda_sekai_sensen_uniform, shirt_lift, skirt, solo, stomach, sweat, underboob, underwear, white_panties, wooden_floor