Rule 34 Dev - 1boy 1girl absurdres black_background black_shirt blonde_hair blue_eyes bracer brother_and_sister castor_(fate) chakram collar commentary_request diadem fate/grand_order fate_(series) fei_(otoya) highres medium_hair metal_collar parted_lips pollux_(fate) revealing_clothes robe shirt siblings sword twins weapon white_robe|20560382505