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...!?
It's what feeds the hot springs.
It's what allows for this inn.
،إنها ما تغذي الينابيع الساخنة
.وهي التي تجعل إقامة هذا النزل ممكنة
Sie speist die heißen Quellen
und ist die Grundlage dieses Gasthauses.
Es lo que alimenta las aguas termales 
y permite abrir esta posada.
Es lo que alimenta las aguas termales
y permite abrir esta posada.
Voilà ce qui chauffe notre eau
et alimente cette auberge.
È proprio grazie a essa che esistono queste terme,
ed è proprio grazie a essa che esiste questo luogo...
Isso que alimenta as águas termais,
e o que permite que a pousada funcione.
Она питает горячий источник, и 
благодаря ей существует эта гостиница.