Roland had learned about the situation of No. 76 from Nightingale. In fact, he was very interested in the distant history of Taquila and the intelligence about the Battle of Divine Will that the Taquila witch claimed to have. He had saved a lot of time and effort now that she had shown up by herself.
Other than Nightingale, Sylvie, and Scroll, there were also Leaf and two potted plants in the office to prevent accidents from happening. Once the plants' abilities were cast, even if No. 76 used the God's Stone, she would not be able to eliminate the crazed vines—as soon as she stalled her footsteps, Nightingale would be able to retaliate and defeat her.
Potted plants looked like decorations, and were harmless when not triggered by magic power. Therefore Roland also did not need to deploy a handful of guards to surround the room—he did not want his intentions to be revealed before even starting the negotiations.
