1girl, bad_pixiv_id, blue_headwear, blue_one-piece_swimsuit, blush, breasts, brown_eyes, brown_hair, collarbone, competition_swimsuit, cowboy_shot, girls_und_panzer, grabbing_own_breast, grey_background, groin, half-closed_eyes, hat, large_breasts, long_hair, looking_at_viewer, mika_(girls_und_panzer), ngc20701, no_headwear, one-piece_swimsuit, open_mouth, simple_background, smile, solo, standing, steam, sweat, swimsuit, thigh_gap, tulip_hat