FTHTD-185 · A Certain Hot Spring Inn That Has Received Astonishingly High Ratings on Multiple Travel Sites! There, Extreme Services Using Bubbles Were Being Performed!! Titled "What is the Contents of the Bubbles?"!!! Unveiling the Full Picture of the Secret Service Being Conducted in a Private Open-Air Bath!

A certain hot spring inn that has received high ratings across the board on multiple travel sites. Apparently, a special service is being conducted in a private open-air bath. It seems that there is something in the "bubbles," and it is a game of guessing what it is. There are various things, such as fluffy ones, crunchy ones, and slippery ones... What kind of game is being conducted in the private open-air bath???