The ability to choose whether to become a “Good Demon” or “Bad Demon”:
Players have a Karma axis (Bad-Good)
- If you refrain from eating humans as a demon, you gain Karma points.
- If you kill demon NPCs or demon players (with bad Karma) you gain Karma points.
- If you complete good missions/tasks, you gain Karma points.
Eventually, when you max out the Karma bar on the good side, you get the opportunity to conquer the sun.
“Good Demons” can also join the Demon Slayer Corps.