Apprentice in a Mysterious World

My coworker was eaten.

It happened while I was delivering takeout, on the first day of my new job.

On my tenth day at work, my boss was eaten too.

On the night I faced unemployment again, someone knocked at my door. They claimed to be from a mysterious investigation bureau, arrested me, and said I was a suspect who had to cooperate with their investigation.

But I knew they just wanted to eat me.

*

Rules for surviving in a mysterious world:

1. Don't reveal your name.

2. Don't trust anyone too easily.

3. Refuse all gifts without fail, and don't give anyone anything either.

4. Don't trust your eyes, and don't put your faith in what you hear.

5. After reading the four rules above, flee as fast as you can.

Theme: As long as life goes on, be brave and fearless