rnkk, istina_(arknights), year_2024, 1girl, :/, alternate_costume, animal_ears, bear_ears, beret, blue_eyes, blue_hair, blue_hat, blunt_bangs, book, braid, closed_mouth, crossed_arms, dot_nose, hair_ornament, hat, holding, holding_book, long_sleeves, medium_hair, monocle, sailor_collar, shirt, simple_background, solo, star_(symbol), star_hair_ornament, tilted_headwear, twin_braids, upper_body, white_background, yellow_shirt, , arknights