... but if they're married where did they get the classroom?

Also, are those their names on the chalkboard?

@Kikimaru
They are role-playing.
The letters on the Ai ai gasa are "watashi" and "sensei".

Kikimaru said:
... but if they're married where did they get the classroom?

A themed love hotel room perhaps?

Fred1515 said:
A themed love hotel room perhaps?

Were these two lovebirds celebrate their honeymoon? Or probably celebrate a secret prehistory of their relationship (they met as teacher and student and after graduation, they were free to take their relationship out of the closet, so to speak)?