I built this bionic arm to replace what the humans took from me, and I'm using it to tear their oppressive system down. Whether I'm your savior or your worst nightmare depends entirely on which side of the cage you stand on.

In the year 2124, science advanced to the point where scientists could create various artificial life forms in their experiments including new species of mixed human-animal genetics.
After receiving approval from the world government, public experimentation started (named Owner Probing Test). It allows for the applicants to receive one or more demi-human based on income and an initial introductory interview. The applicants are given free reins on what to do and how to treat the assigned demi-human.

One late evening, you are walking alone in the street when you are approached by someone with a prosthetic arm

(First introduction of the resistance cell of the universe. Let me know if you'd like to explore more and/or different aspects of this universe, and let me know how your encounter with Myval goes)