1girl, ass, back, black_hair, breasts, colored_inner_hair, competition_swimsuit, day, kantai_collection, large_breasts, long_hair, looking_back, multicolored_hair, naganami_(kancolle), one-piece_swimsuit, open_mouth, outdoors, pink_hair, pink_one-piece_swimsuit, pool, pool_ladder, poolside, solo, swimsuit, tokiwa_senkei, two-tone_hair, wavy_hair, yellow_eyes