1girl, ass, blue_eyes, blush, breasts, fundoshi, girls_und_panzer, hiyama_yuu_(wee259hiyama), itsumi_erika, japanese_clothes, large_breasts, looking_at_viewer, looking_back, ocean, open_mouth, outdoors, ponytail, rope, shiny_skin, sitting, sky, solo, sweat, white_hair, yamakasa