In fact, Nobuyuki NAKAJIMA, the first chairman of the House of Representatives, was Mutsu's close friend since the time of Kaientai, and Mutsu also kept through his lifetime a close friendship with Toru HOSHI, a kingmaker in Rikken Jiyuto (a political party) who was also Mutsu's subordinate once; such connections helped Mutsu in his parliamentary affairs.
実際に初代衆議院議長の中島信行は海援隊以来の親友であり、またかつて部下であった立憲自由党の実力者星亨とは終生親交が厚く、このつながりが議会対策に役立っている。