1girl, animal_ear_fluff, animal_ears, ass, bad_twitter_id, blue_one-piece_swimsuit, breasts, expressionless, green_eyes, grey_background, grey_hair, hair_bobbles, hair_ornament, hand_on_own_ass, long_hair, mochizuki_riku, one-piece_swimsuit, original, school_swimsuit, simple_background, small_breasts, solo, swimsuit, tail, thighhighs, thighs, two_side_up, white_thighhighs, wolf_ears, wolf_tail