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[Description: A one-time-use item, known as the top-tier sulfur secret bath of the Golden Hot Spring. A scoop of Koburō Secret Bath pours out a large amount of hot spring water, just enough for one person to cleanse themselves.]
"It really is hot spring water," Kamiyagawa nodded after reading the information on his phone screen.
In Japan, the term "Koburō" is a surname.
Its original meaning is a bathtub, or a bathhouse.
Thus, in the late 18th century, those who were first surnamed Koburō were generally those involved in the hot spring bath and public bathhouse service industry.
Furthermore, Japan is a country rich in hot spring resources, developing a set of hot spring bathing cultures with distinct regional characteristics, also known as "Koburō culture."
The entire Japanese nation is sometimes referred to as the "Koburō nation," which shows the significance of the bathing culture to Japan.
