Chapter 179: Confinement on the Mountain

Confinement on the Mountain (山籠り, Yamagomori) is the 175th chapter of the Kekkaishi Manga written and illustrated by Yellow Tanabe.

Summary
After landing at Kokuunsai's castle at Aibasan, Yoshimori, Tokine, and Sen Kagemiya immediately begin fighting over their travel arrangements. Haisawa goes to get Shidou, who demands to know why Yoshimori brought girls to the castle (he mistakes Sen for a girl until Yoshimori corrects him). Shidou explains that they are in the middle of Kokuunsai continuing his bloodline in seclusion, which involves him splitting into two forms: his older body, and a younger heir. Shidou's hope is that they will be able to train the young heir to stay away from women, so he will not give them the same problems that Kokuunsai does. Yoshimori asks if a butterfly came to visit (referring to Saki's Demon Illusion Butterflies), but just then, there is a large thump that shakes the whole castle.

Shidou grows alarmed, worrying that the seclusion has failed because Yoshimori brought a girl into the castle, and that Kokuunsai has sensed her presence. A nearby mountaintop erupts, showering the castle with rocks. The other karasutengu gather, eagerly awaiting for their master to emerge. Shidou says that their home exists only because it has a master, and that everything there is subject to the master's mood. The castle is then hit by a storm consisting of rain, lightning, and a tornado, forcing Tokine to protect herself and Sen with a Kekkai. Sen notes that she is calm, and she replies that she's used to all the trouble that Yoshimori causes. As the tornado bears down on the castle, Yoshimori attemts to protect the area with several large Kekkai.

Sen again asks Tokine what she will do if the prophecy of Karasumori's destruction is true. Tokine admits she is limited in what she can do (which Sen notes is similar to Yoshimori's answer), but that she'll keep a close eye on Yoshimori, because he acts to protect others, but does so without thinking. The weather suddenly clears up, and the karasutengu gather again. The mountaintop splits open, releasing two large tornadoes. Shidou announces that the heir has been born.

Characters (in order of appearance)

 * Sen Kagemiya
 * Tokine Yukimura
 * Haisawa
 * Yoshimori Sumimura
 * Haikawa
 * Shidou
 * Kokuunsai