Rule 34 Dev - 1boy 1girl black_eyes brother_and_sister edelweiss_(senjou_no_valkyria) flag isara_gunther military military_vehicle motor_vehicle official_art senjou_no_valkyria senjou_no_valkyria_(series) senjou_no_valkyria_1 short_hair siblings simple_background tank welkin_gunther white_background|9138337299