C1261 What Are You Sneaking Around For!

What are you sneaking around for!

The so-called pencil case was actually a common method. Without any surveillance, it was possible to find out if anyone had been in the vicinity recently. Of course, it was only for those people who didn't have much experience. He threw the hair-sized pencil stub on the ground. If he hadn't paid careful attention, he wouldn't have noticed it at all