At last, Rokuro and Benio arrive at Kyoto to tour when they follow Sae to an underground passage at the Exorcist Union headquarters where they find a mysterious gigantic tree and meet Subaru and Tatara there. However, the two are devastated when Subaru reveals Sae's real identity, that she is part of the Ame-no-mihashira tree that separates Magano and the real world created by Abe no Seimei...