C85 Vampire Bat

A letter, entirely purple in color, was placed on the second floor of the bookshelf.

At first glance, it wasn't very eye-catching, but upon closer inspection, it was extremely eye-catching.

Because all the other books were covered in a thick layer of dust, this purple letter was the only one with no dust at all.

It was very strange.

I know that this old monk's background is extraordinary