He became a member of a group of warriors and died after much hardship.

'Please, my next life will be as the son of a rich family...' *** When I came to my senses, I became a master from a family with a huge fortune.
Christian Van Baren Kajar.
A famous bastard from the dark clan of the Magic Empire.
‘Ugh!! what's this!!' Only two years passed before Chris met his tragic end. He must prevent the destruction of the world even if it takes more than two years.
There is only one way to survive and enjoy wealth and fame.
All I have to do is acquire the family of this body, the Dark Master Family, and become the Demon King myself.
It was a terrible situation, but it was worth a try.
why? 'Because I'm a genius!'