1girl, animal ears, arknights, black jacket, blush, book, breasts, brown hair, cleavage, elsi, extra ears, gradient background, hair between eyes, holding, holding book, jacket, lapels, large breasts, long hair, no bra, no shirt, open clothes, open jacket, penance (arknights), simple background, solo, suit jacket, tail, upper body, very long hair, wolf ears, wolf girl, wolf tail, yellow eyes