Dealing with Shishitong Justice wasn't difficult for Duanmu Ai, it was just a matter of swinging her War Hammer once—she had initially thought this character was the ultimate backstage boss, only to discover he was merely a minor character who had unintentionally learned of Subspace's existence and attempted to exploit it...
As for the spiritual projection of Shishitong Justice, Duanmu Ai had also interrogated him, obtaining information similar to what Akechi Goro had provided. Ultimately, he was just a small-time villain, so after getting the information, she didn't hesitate to smash his spiritual projection to smithereens and then she turned and vanished.
Next, her target was the collective unconscious beneath the subway station, as mentioned by Akechi Goro.
However...
"This thing really does look eerie."
