1girl, 2015, aozaki_touko, bikini, black_bikini, breast_hold, breasts, cloud, day, dutch_angle, grin, happy_birthday, kamehima, kara_no_kyoukai, long_hair, medium_breasts, ocean, ponytail, red_eyes, red_hair, sea_cucumber, sky, smile, solo, swimsuit, thigh_gap, thighs