Why are these obviously dangerous great powers in the spa district to begin with?

There was a reason for this.

Tojiko requested an armistice.

No one could disobey those dark gray eyes.

In the spirit of the armistice, both powers

decided to have a pleasure trip, for Tojiko's sake.

Everything went surprisingly well.

While Hijiri and Miko had all sorts of fun

their companions enjoyed the trip too, just for that day.