First one from another place

With the approval from Mu Bao Bao, there was nothing holding them back.

But of course, this wasn't ever mentioned to the ministers of the Mu Empire's court since there was no doubt that they would abuse this matter.

No, even before that, this was something that was related to Rokuko's secret.

So it was only natural that no one would be allowed to find out about this other than the ones that already knew. Other than the ones that were trusted to keep this secret, no one else would be allowed to know a single thing.

So that meant that only those that had been in the room during that time knew about this.

That also meant that it was quite a bit of work for those people that had been in that room.

The one that it was the hardest on was Rokuko since she was the one that had to build the tunnels to expand them all over the Mu Empire.