(informal) large bicep that appears when flexing

武芸: martial arts

to show / 魅せる: to show off; to demonstrate a skill or talent

brag, boast

pride

下知: a command; an order

土笛: ocarina

服: (archaic) mourning; mourning clothes

横笛: any Japanese bamboo transverse flute

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend