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.
Wait, you're actually the 
spirit of the hot springs?
لحظة، هل أنتِ روحُ الينابيع الساخنة فعلاً؟
Was? Bist du etwa tatsächlich
ein Onsen-Geist?
Entonces, ¿de verdad eres el espíritu?
¿De verdad eres el espíritu?
Alors tu es vraiment
l’esprit des sources ?
Un attimo, ma allora
sei davvero lo spirito delle terme?
Hã? Você é mesmo o espírito das águas termais?