The Glass Knife contained the string of fate that belonged to Sevirax, the Chain Lord of the Ivory City. It was his death, which the War Maidens had received from the Saint of Shadows hundreds of years ago.
Now, two Shadows came back to retrieve it.
Sunny suspected that none of the sect members that had been alive all those centuries ago lived still, including the particular Maiden to whom Shadow Lord had sent the Glass Knife before taking his own life. As such, none would remember the four-armed demon who had delivered it… most likely.
And yet, the current disciples of the cult had to know what was being kept in their temple, and how it got there. So, there was a chance that they will just hand it over to the original owners… no matter how slim.
If not, they would allow Saint and her entourage inside, at least.