2girls, animal ears, arknights, bear ears, black dress, blonde hair, blue hair, blue necktie, book, bookshelf, braid, brown jacket, collared shirt, cyan aqua, dress, feet out of frame, grey eyes, gummy (arknights), hair ornament, hairclip, holding, holding book, indoors, istina (arknights), jacket, knees together feet apart, long sleeves, multiple girls, necktie, off shoulder, open book, open clothes, open jacket, pantyhose, puffy long sleeves, puffy sleeves, red pantyhose, shirt, sitting, socks, white shirt, white socks