Height 158 cm (5' 2") Mutsu is the merchant fleet Kaientai's 2nd in Command, but is de facto the one running the company. This is because her "natural idiot" leader Sakamoto Tatsuma is always going MIA (missing in action). Things once got to the extent that she had to install a homing device in his pistol so that when he fired it, the homing device would indicate her to his whereabouts.