Anna was sat in a comfy chair, a pile of books on the table besides her and another one in hand. Her left hand hovered over it as she read, occasionally flipping a page. Truly, some good relaxation time.
At some point, she heard some footsteps pass by. This, while an uncommon occurrence, was by no means rare. What was rare, though, was the music accompanying them. If it wasn't for the slightly muffled nature of the sound, she could've sworn they were just playing music on their scroll's speaker. Displeased, she stopped reading and turned her head towards the source a little to find out what in the world was wrong with them.
The steps (and music) headed to a nearby bookshelf, where some light shuffling was heard. Oh, so they were picking up some books. Not really minding that, Anna went back to her book. The steps passed in front of her again and headed off. Not very far, though - they stopped near what was, from what Anna remembered, another bookshelf. Books were set down and other picked up.
This repeated at least 3 times before Anna gave up on reading entirely, inserting her bookmark before putting the book on the top of her pile. Using her semblance's second stage, she looked for the culprit from her seat.