0shu_0v0, 1girl, adapted_costume, back_bow, black_hair, bow, breasts, butterfly_hair_ornament, butterfly_wings, casual_one-piece_swimsuit, cleavage, feet_out_of_frame, frilled_one-piece_swimsuit, frills, from_side, hair_ornament, hand_up, insect_wings, kimetsu_no_yaiba, kochou_shinobu, looking_at_viewer, looking_to_the_side, navel, one-piece_swimsuit, parted_lips, purple_eyes, purple_hair, purple_one-piece_swimsuit, signature, smile, solo, standing, swimsuit, updo, wings