As Shimazu I tried to invade Chokosabe's island with two armies and one general, but now can't proceed because of their agents. I regret not giving attention to my own agents. It was for peace, the Takeda are allied with Hojo and Date, I accepted alliance with Takeda because they're terrifying, though so is my faction. I kept good relations by not risking detected agents against them and now I'm paying for it against the Chosokabe. They have 2 spectacular monks, one of which used to be mine, two great ninjas, a super metsuke, and a decent geisha. My own new geisha seems incompetent even when she has 59% chance of success. Every turn there's sabotage and other attempts. Moved my general to the outside army to prevent them being bribed, but may get assassinated. What to do? Save scumming doesn't work, and I've never been this far into a Shogun 2 game before.