After I Turned In the System, I Joined the Ranks Directly

It's good, I recommend it.

The premise is interesting, but the writing is immature, and the story structure is only in its early stages. The author is probably a beginner. Keep it up!

The premise is novel, but it's too short.

The protagonist is always just a leek (a metaphor for someone easily exploited), the difference being whether they are harvested by the system or by those above them—a mere tool, devoid of freedom and thought.