1boy, 1girl, ball, comic, emphasis_lines, fake_tail, flying_sweatdrops, greyscale, hair_between_eyes, holding, holding_ball, husband_and_wife, kimidake, medium_hair, mole, mole_under_eye, monochrome, motion_lines, original, pet_play, ponytail, seiza, short_shorts, shorts, sitting, sparkle, sweat, tail, tail_wagging, throwing