1girl, bad_twitter_id, blue_eyes, blue_one-piece_swimsuit, blush, breasts, grey_background, long_hair, looking_at_viewer, medium_breasts, mochizuki_riku, one-piece_swimsuit, original, own_hands_together, pink_hair, ribbon, school_swimsuit, simple_background, solo, swimsuit, thighs, two_side_up