1girl animal_ears aqua_shirt arknights black_bra black_skirt blush bra breasts cleavage collarbone cow_ears cow_girl cow_horns cowboy_shot high-waist_skirt highres horns large_breasts long_sleeves looking_at_viewer open_clothes open_shirt orange_eyes parted_lips purple_hair shirt short_hair sideroca_(arknights) siguya simple_background skirt solo underwear undressing white_background