2girls, andou_(girls_und_panzer), bathroom, bc_freedom_(emblem), black_hair, blonde_hair, blue_eyes, blush, breasts, brown_eyes, clenched_hand, covered_navel, dark-skinned_female, dark_skin, emblem, frown, girls_und_panzer, grimace, indoors, large_breasts, medium_hair, messy_hair, multiple_girls, nakamura_yukitoshi, naked_towel, open_mouth, oshida_(girls_und_panzer), standing, sweatdrop, towel, wet