The story follows Hakone, a hot spring spirit who descended to a spa resort on Earth. However, with her long slumber, she looks like a little girl on the outside. The high school boy Touya stumbles across her at a hot spring and ends up joining Hakone in retrieving her original powers. (Source: Anime News Network)
Haruna
Hakone
Touya
Hakoneko
Otama
Goura
Ashinoko
Butler
Aki
Miya
While wishing to the shrine of the hot spring spirit that he would get closer to Haruna, Tohya drops a steamed bun into the water, and out pops a strange little girl.
Haruna's sister, Aki, doesn't believe is the spirit of the hot springs, but while they're taking a bath, she shows them her powers.
Hakone-chan shows off her talents and lands a job.
Hakone, the new tour ambassador for Yumoto, works a little too hard.
Hakone gets a level up!
A new hotel opens up next to Shunjusou. The owner is a girl named Miki, another hot spring spirit.
Miya invites the gang to her hot spring pool. Something's fishy, but seeing Haruna in her swimsuit, Tohya goes along with it.
Tour ambassador Hakone goes to Jigokudani, where Aki gives her a scare by saying there are still demons there.
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Hakone and the gang visit Goura Parks, where they're attacked by the resident spirit.
It turns out that there are more hot spring spirits out there.
Hakone and Miya, accompanied by Haruna, Aki, and Tōya, are returning to Motohakone via the Tekkosen. Miya tries using her Water of Servitude to deal with the crowds.
For a moment Hakone and Miya regained their full powers upon reaching the shrine. Hakone mentions that no hot spring spirit can warm the soul with stolen powers. Sensing wisdom in her words Gōra tells Ashinoko to stop. Ashinoko turns on Gōra as a result, but that is because Ashinoko, being still too young, cannot fully handle her powers yet.