Without us noticing, the sunlight had turned a warm orange color.

When I stood up, Harry was still reading. He seemed to like the book a lot.

Suddenly, the sound of birds’ wings flapping broke the silence in the library.

I immediately became alert. The very next moment, a swarm of black beak crows swooped in from the vault above. Swarming in like dark clouds, they flew around us and landed on various perches. A few even perched on Harry too.

“What’s going on?” The black beak crows’ abrupt visit gave me a bad feeling.

Black beak crows were usually aggressive creatures. Under normal circumstances, they would attack any living things, including us humans. Yet right now, they were hiding under the racks, shrinking in...