2boys, animal ears, arknights, black capelet, black footwear, black gloves, black jacket, black skirt, book, brown wings, capelet, closed mouth, detached collar, gloves, grey eyes, grey hair, grey shirt, halo, holding, holding book, jacket, long hair, male focus, multiple boys, open clothes, open jacket, shirt, shoes, skirt, sweat, tail, tangguanguanguanguanguanguan, wings