In place of Ratman who cancelled at the last minute, Mana joins Kitaro and the others on their trip. They're headed to an inn exclusive to youkai - the Immortal Onsen. Everyone's getting the most out of the hot springs, but suddenly, the inn is wrapped in an unsettling noise. The source is underground, the riotous energy from Mt. Fuji. Appeasing it is the job of the owner of the inn, but the current proprietress, Nebutori, is so fat she can't always do her work. Mana offers to serve in her place. Mana and Kitaro go into the caves of Mt. Fuji, and a huge shadow closes in on them...!?
and since way back before her,
this place has always been for yokai only!
!ومنذ القدم، كان هذا المكان مخصص لليوكاي فقط
y aún más atrás, solo permitieron
la entrada a los yokai.
y aún más atrás, solo permitieron
la entrada a los yokai.
e da ancora molto più indietro, si è stabilito 
che questa è una locanda riservata agli yōkai!
e bem antes delas, esse lugar
sempre foi só para Yokai!