Yako

The fox statue spirit that holds the title of Number Two of The Seven Wonders (二番目の七不思議. Romaji: Ni-ban me no Nanafushigi) as the Misaki's Stair ghost. She took on the form of a beautiful lady inside her territory while outside, she took the form of a kitsune spirit.

She spirited humans into her realm in hopes of them making an appropriate vessel for her deceased human teacher, Misaki.