1girl, amagami, ass, black_eyes, black_hair, black_one-piece_swimsuit, breasts, competition_swimsuit, covered_navel, cowboy_shot, from_behind, hand_on_own_hip, large_breasts, looking_at_viewer, looking_back, medium_breasts, multiple_views, one-piece_swimsuit, ponytail, signature, simple_background, smile, stopwatch, stopwatch_around_neck, swimsuit, tsukahara_hibiki, two-tone_swimsuit, white_background, yoo_tenchi