Yeah, what indeed.

When she inspected the courtyard, XX-sama asked me a strange question:

When did they finish maintenance on the notice board?

At the time Reisen and I came to the storeroom, they'd just finished and were raising it back up.

The time they finished maintenance...?

But when she heard this, XX-sama got really deep in thought.

Then she asked me another question.

Could it be... When you took the whiteboard into the storeroom, you didn't open the door completely?

What did she mean by that?