...Eh. It's important information, I guess? Not like anyone can actually strong-arm Sansui into doing anything against Rain's best interests.
The royal family really is stuck between a rock and a hard place, after all, so their desire is understandable, though the depth of their planning is not.
Honestly, this is mostly that shit god's fault. Who drops overpowered isekai protagonists all in the same damn country, which just so happens to be politically fragmented?