Corporations without any holidays are called "Black" in the outside world.

Did you give Milady something to read? You gave her a weird book again, didn't you?

Because she was a bother, whining about how bored she was.

I randomly picked a book from the outside world and gave it to her.

How to Recognize a Black Corporation: You Work You Lose ＼(^o^)／

To call our proud "Scarlet" home "Black"...

By the way, holidays on the calendar are marked with scarlet.