Rule 34 Dev - 1girl alternate_costume bikini black_ribbon blush breasts brick_wall brown_eyes brown_hair cleavage collarbone earlobe1514366 girls_und_panzer hair_ribbon highres holding holding_hose hose koyama_yuzu large_breasts looking_at_viewer navel official_alternate_costume ponytail ribbon side-tie_bikini_bottom swimsuit white_bikini|24737001588