Shane explained a few things a little bit more in detail, without sharing anything important.
It was a well-known fact that Miriam was the Starlight guild's guildmaster while the Boreas mercenaries were also in his guild.
As such, Shane simply mentioned it, and the fact that he had other means to sneakily attack a shelter without them noticing.
In the end, there was no counterargument the other authorities of the government could come up with to oppose Shane's attempt to build a perfect foundation.
They had accepted even more dangerous missions from other prodigies after all and the final rewards were not as enticing as Shane's.
It was a perfect mana purification manual that led to the perfect foundation Shane was trying ceaselessly built up until now!
Thus, everyone accepted the proposal Shane made while saying that he should give his best to prevent the attacked shelters from finding out that the human race was behind them.