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.
A yosegi puzzle box.
صندوق أُحجية يوسيغي
Eine Holz-Puzzle-Box?
¿Una caja de madera?
¿Una caja de madera?
Une boîte à secrets ?
Una scatola rompicapo Yosegi?
Um "yosegi zaiku"?