1x7 - Hell Teacher: Jigoku Sensei Nube

As unseasonable snow blankets the town of Domori, a beautiful young woman appears before Nueno. Her name is Yukime, and she has come to fulfill a promise she made to him five years ago. Excited by their teacher's improbable romance, Nueno's students sneakily tag along on their date, only to witness Yukime's frosty intentions.