1girl bangs black_hair breasts breasts_apart breasts_out buttons chouno_ami clothes_pull collarbone collared_shirt eyelashes girls_und_panzer grey_eyes highres large_breasts light_smile looking_at_viewer lying nipples off_shoulder on_back onsen_tamago_(hs_egg) partially_unbuttoned shirt shirt_pull sidelocks simple_background solo upper_body white_background white_shirt