1girl, blonde_hair, blue_eyes, blush, breasts, cellphone, cleavage, closed_mouth, full_body, fundoshi, girls_und_panzer, hiyama_yuu_(wee259hiyama), iphone, japanese_clothes, long_hair, navel, no_bra, phone, signature, simple_background, small_breasts, smartphone, sofue_(girls_und_panzer), solo, white_background, yamakasa