In order to make the Pipe Fox revert to its original form, Yūko sends Watanuki to purify it in a mystical mountain, where he meets the Zashiki-warashi again.
Genre: Mystery
Release
The situation involving the twin sisters start to get dangerous as one of them starts to bleed for apparently no reason.
Seal
Watanuki and Doumeki meet a pair of twin sisters and even go to a date with them, but Watanuki can't shake the feeling there is something strange about the older one.
Transfiguration
Watanuki investigates a classmate of his who started to behave strangely since a pair of wings started to grow from her back.