Bathhouse hot water... When I put it lightly on the water outlet

I went to the bathhouse last week.

But... in that hot spring... there's a place where water comes out, right?

Not the faucet...

When entering the hot spring...

I didn't know, but when I went in, I sat right at the entrance... Suddenly, the area next to my thigh felt like whoosh... I was startled... I was like, "What is this?" and when I looked, it was the entrance where water came out next to me.

I was surprised for a moment, but then I just laughed because it was so cool.

When I came out after taking a bath, there was a medal in that spot.

You said it would disappear soon...

It's been almost a week and it's still like this...

I was wondering if it would still be visible even if I was wearing shorts.

It doesn't hurt, but I wish it would go away soon.

What should I apply?