3girls, :d, :o, barefoot, bespectacled, blonde_hair, blush, book, book_stack, brown_eyes, feet, glasses, long_hair, looking_at_viewer, lying, multiple_girls, on_back, on_stomach, open_book, open_mouth, pink_hair, pleated_skirt, purple_eyes, purple_hair, school_uniform, school_uniform_(yuyushiki), serafuku, short_hair, sitting, skirt, smile, soles, toes, twintails, upside-down, yellow_eyes