2boys, black_background, black_footwear, black_jacket, black_neckwear, black_pants, blue_eyes, blue_hair, brown_background, cello, chair, character_name, collared_shirt, formal, full_body, gradient, gradient_background, hair_between_eyes, holding, instrument, jacket, long_hair, long_sleeves, looking_at_another, looking_away, male_focus, multiple_boys, music, necktie, outstretched_arm, pant_suit, pants, playing_instrument, red_eyes, reflective_floor, shirt, shoes, sideways_glance, sitting, smile, suit, very_long_hair, white_hair, white_shirt