Mayara took a deep breath as she walked through the school corridors, trying to calm her racing thoughts. The events of the day weighed heavily on her mind, and she couldn't shake the feeling of unease that lingered within her.

Suddenly, her phone rang, breaking the silence of the empty hallway. With a furrowed brow, Mayara glanced at the caller ID, but it displayed only a string of unfamiliar numbers.

Hesitant but curious, she answered the call. "Hello?"

There was a brief pause before a ...