Or Takashi could just assassinate someone in a position of wealth/power, impersonate the victim and reveal to his/her bodyguards that their leader is actually DUNN DUNN DUNNN a kitsune.
In other words he get them drunk, gives them a raise, butters them up in every way he knows how, then confides his "secret" in them, transforming from their leader directly into his kitsune form, and gives a whole speech about how he's tired of living a lie, this should work on most of them after all he has some serious bluffing skill.
Of course I'll need you guys to back me up as mercenaries employed to ensure nobody gets any bright ideas about seizing power themselves, perfectly understandable, revealing a secret like this to one's bodyguards entails a degree of risk after all and using a divided new guard & old guard to keep power from accumulating in the hands of a few officers has been done many times throughout history.