A scumbag, he traveled to a different world, relearned mathematics, physics and chemistry, and became a world-class mechanical magician. He doesn't like the secular framework and has a spontaneous personality, so he is regarded as a big devil by the secular world. Bathed in the light of swords and blood, one person will eventually change this sick world...
The mentality of practitioners should be changed. At an age that is already free, it is bound by various expectations and shackles. It cannot play, cannot do things, cannot do this, cannot do that, and it has created a bunch of replicants who are stuck in the rules.
Become a devil, be a devil
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.