"So should we try looking at the Doubles?"

"I suppose."

We picked a bookshelf at random. Double Zeroes have a zero for their secondary
specialization, and a zero for their rank, to show that they are the highest level detectives. Their
primary specialization isn't a zero, so you just have to look for them within each section of the
shelves, or you won't be able to find them. As if wandering through the forest of detectives, we
walked and gazed at countless files.

"I heard there are about twenty Double Zeroes."

"That's quite a few."

"But that kind of talent is one in three thousand, right? If you think of it that way, Triples and
Doubles really are both out of our league." I sighed heavily.

After that, we took about an hour and picked out seven Double Zero detectives. Particularly
those who had been first registered more recently.