Unless they hang way back Kirai should be able to get 2-3 models in to "kill Bill" or Hina t1. With Seishin and I'm assuming you have 3 that's six possible free walks for say two Shikome and Ikiryo. That's not counting Datsu who might make a charge or get a free Onryo depending on where things line up. You can replace all those minions and Ik so fire and forget is acceptable most likely.
While you can get away outside of keyword, I'm not sure I see why with Kirai in this case.