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.
The spirit of the hot springs?
روح الينابيع الساخنة؟
Onsen-Geist?
¿Espíritu de las aguas termales?
¿Espíritu de las aguas termales?
L’esprit des sources ?
Lo spirito delle terme?
Espírito das águas termais?