Himawari-chan asks for Yūko's help to solve a series of mysterious incidents occurring at the school, involving a game called angel. Yūko meets Himawari-chan, and Watanuki is forced to work with Doumeki. Doumeki begins to learn about his true nature.

A teacher in Watanuki's school gets her hands into a dangerous item from Yūko's shop, the monkey's paw. The teacher's discovery eventually leads to her downfall and of the monkey's paw choking her.

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.

Watanuki reminisces about his childhood, when he was saved by a boy who became a precious friend of his.