This...is a solution that hadn't occurred to Ken. To not have to choose between Shamal or Ryohei, but to have both. He blinks at Ryohei for a moment, then glances at Chikusa as though looking for his more intelligent partner to find some flaw with this.

Ryohei doesn't seem to need any input on the matter, so Ken supposes if there's a problem, they can just leave while Ryohei's gone...but this sounds like a good plan to him, on the face of it.