When Larissa reached her office, she locked the door behind her, feeling a sense of unease settling in. Unable to fully concentrate on her work, she found herself constantly on edge, listening intently to any sounds or movements outside her office.

When someone passed by her door, she would freeze and be on high alert. Even after the person had moved on, she still felt tense. By the morning's end, her state of tiredness was no different from when she got off work.

Close to noon, Larissa saved the report she had done halfway and was about to grab lunch. Suddenly, she heard footsteps outside her door again. This time, the footsteps came to a halt right outside her door.

Subconsciously, she held her breath, her senses on high alert as she tried to discern the sounds. Her heart was racing.

Suddenly, there came three knocks on her door, causing her to involuntarily swallow nervously. Then, she asked, "Who's there?"

"It's me," came the voice of a young man, sounding oddly familiar.