Since we were going out of our way, we headed for the open-air bath, which the hotel recommended.
　When they opened the door and stepped outside, they were greeted by a dazzling light.

"Wow, ......!

　Charlotte shouted in admiration.
　Outside the door was a rock face that looked like a stalactite cave. It seemed to have been carved out of the cliff on which the hotel was built, with a large opening directly in front of it overlooking the ocean.
　And right in front of the ocean, there was a huge open-air bath.

　Shiro steam was rising and the smell of sulfur was wafting in the air.
　Thanks to the cave, we could enjoy the hot water without being directly exposed to the sun. In addition, you can enjoy the bath without being exposed to the sun.

"Wow, that's an amazing bath!
Yeah. I can see why it's so popular.

　Allen nodded honestly. After taking a quick bath and rinsing off their bodies, the two of them soaked side by side in the bathtub. The water was neither too hot nor too warm. The water was neither too hot nor too cold.

"Wow, ...... that feels so good.
"Yes, it is .......

　For a while, we both enjoyed the hot spring while looking at the sea.
　The other bathers were similar to us, except for a few small conversations, and the sound of the sea was the only sound. The sound of the tide was the only thing that filled the air. The occasional cries of seabirds reached them, and a peaceful time passed.
　Charlotte, blushing and pale, murmured happily.

I wish I could stay here at ...... forever.
I guess so.
But if you soak in ...... forever, you'll burn out. It's a waste of time.
"Hmm, that's sweet. This is not the only way to enjoy a hot spring.
What?

　That's when Allen grinned.

"Sir, I've brought your order.
Just in time. Thank you.

　The mermaid concierge sashayed in with a tray.
　She presented me with a glass bowl of ice cream. It was pure white vanilla ice cream with a cherry on top.
　When I handed it to her, Charlotte's face lit up.

Ice cream while soaking in a hot spring!　It's a luxury ......!
It's too early to be surprised. "Immortal Ice.

　If you snap your fingers, the glass bowl will begin to glow pale.
　The ice cream doesn't change its shape in the slightest even if it is hit by the steam, and it remains moderately crispy.

Now it won't melt in the hot water. Savor it slowly.
Oh, thank you so much!

　Charlotte quickly scooped a little bit of ice cream and took a bite. At that moment, her face beamed with happiness.
　I watched her eating it, thinking how delicious it was, but it seemed that the other customers were doing the same. Everyone was glued to Charlotte's ice cream, looking at each other and gulping.

"Hey, mister!　I want that ice cream too!
I want that ice cream too! Don't tell my mom I'm having a beauty treatment.
"No, big brother. Can you put your magic on our ice cream, too?
Of course not!
Gentlemen. I'll take your orders in order!

　Feeling good, Allen agreed.
　And so, a huge ice cream boom was born in the open-air bath.