1boy, 1girl, o, ahoge, ass, averting_eyes, bare_shoulders, bed_sheet, bedroom, black_eyes, black_hair, bow, brother_and_sister, collarbone, comic, competition_school_swimsuit, dot_nose, feet_out_of_frame, flat_chest, grey_eyes, grey_hair, hair_between_eyes, hair_bow, hamaken._(novelize), holding, holding_pillow, hugging_object, indoors, knees_together_feet_apart, knees_up, long_hair, lying, on_bed, on_stomach, one-piece_swimsuit, open_mouth, original, pillow, school_swimsuit, short_hair, siblings, sidelocks, sitting, slit_pupils, swimsuit, table, wooden_floor