1boy, abs, arm_hair, bara, beard, black_hair, brown_theme, bulge, buzz_cut, chest_hair, facial_hair, flute, from_side, golden_kamuy, hairy, instrument, large_pectorals, male_focus, mature_male, muscular, muscular_male, music, navel, navel_hair, nipples, nopinzo, nude, pectorals, playing_flute, playing_instrument, short_hair, sideburns, solo, stomach, tanigaki_genjirou, thick_eyebrows, very_short_hair