Kind-hearted Monk

Baishi Shū walked out of the unit after he finished chanting the Rebirth Mantra. 

Inspector Aoki swam into his sight the moment he walked down the stairwell. He was smoking by the side of his car and looked rather restless. Perhaps he was startled by what happened to his colleagues, standing very far away from the wall. However, Baishi Shū wondered if that would be helpful. Since Yokai Akiko could drag people into the wall, it should be able to drag people through the ground as well.

Speaking about that, it was yet another strange phenomenon he could not fathom.

Yokai could go through walls since their body was basically constituted of energy, but how did humans do it? Could it be that the wall opened up like a mouth, engulfing its targets and then closing again? 

But this led to another problem. Walls had no consciousness, so how did a yokai control them?