System-One Demon's Development Plan

Rebirth in another world... Eleven years, do you know how I spent these eleven years? The system was finally turned on today. ... Successfully bound to the magic system, and under the guidance of the system, he will become a big devil step by step. From murder and arson to committing all kinds of evil... I have countless dead souls under my command... But in fact, I am a good person. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.