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An Ayakashi You Must Not Encounter (絶対に遭遇してはならない妖, Zettai ni sōgūshite wa naranai ayakashi) is episode 15 of the Nurarihyon no Mago: Sennen Makyō anime.


Rikuo and his comrades battles Tsuchigumo, an ayakashi once sealed by the onmyōji, Hidemoto. Tsuchigumo, however, easily defeats them & takes Tsurara hostage. Gyūki meets Rikuo and attempts to make him understand how he must truly get stronger.

Characters in order of appearanceEdit

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