I found it! A rustic mixed-gender open-air bath. This was a secret spot loved by flight attendants of a certain airline! There's no way the world would know that this place, just a 10-minute drive from the airport, is such a place! I pretended to be a local and approached the open-air bath, which is the first place the flight attendants stop by on their way back from a long international flight, offering them local sake and making plans to become friends with them, but I ended up getting a full erection! This is bad! I thought I was in trouble, but the flight attendants were looking at me?! Are they frustrated?! An unexpected experience with tipsy flight attendants!