Matsuri and John quickly left the scene when the attention wasn't on them. Seeing as they were thought to be a part of the Elite Dragon Brigade conducting an investigation the members of the Yui Clan didn't block their paths.
The Yui Clan weren't worried about the inspection, since the contraband items that they have weren't even in the estate. So no matter how much the soldiers of the Elite Dragon Brigade searched they would never find anything here.
Some of the Yui Clan members even thought that the Elite Dragon Brigade was full of idiots for not realizing that they wouldn't place such things inside their estate. They were blissfully unaware that the true target of this sudden inspection was John's daughter Milly.
...
