1girl, aona_(anagasaki), bare_shoulders, black_cape, black_hair, blue_eyes, blush, breasts, cape, casual_one-piece_swimsuit, closed_mouth, covered_navel, dutch_angle, fate/grand_order, fate_(series), hand_in_own_hair, ladder_cutout, long_hair, looking_at_viewer, mask, medium_breasts, one-piece_swimsuit, parted_bangs, red_one-piece_swimsuit, side_ponytail, sideboob, sideless_outfit, sitting, solo, swimsuit, tengu_mask, twitter_username, ushiwakamaru_(fate), ushiwakamaru_(swimsuit_assassin)_(fate), ushiwakamaru_(swimsuit_assassin)_(third_ascension)_(fate), very_long_hair