2boys, ane_am, antonio_salieri_(fate), antonio_salieri_(second_ascension)_(fate), arm_support, ascot, between_legs, blonde_hair, curly_hair, fate/grand_order, fate_(series), film_grain, formal, hair_between_eyes, half_updo, holding_another's_wrist, imminent_kiss, indoors, instrument, jewelry, long_hair, male_focus, multiple_boys, neckwear_grab, on_floor, pendant, piano, pinstripe_pattern, pinstripe_suit, red_ascot, short_hair, short_sleeves, sitting, striped, suit, very_long_hair, wolfgang_amadeus_mozart_(fate), yaoi