Three years ago, he was framed and imprisoned. However, due to some strange combination of circumstances, he was spotted by the warden and used all his magical powers!
Three years later, with his extraordinary power, he could touch water with his golden scales and make dragons go out to sea!
"Let you hold great power and dispatch tens of thousands of elite soldiers at will? Even the king of mercenaries must obey my orders. Who dares to disobey an army of millions!"
"You, the top rich young man, are richer than me? All the chaebol bosses are my subordinates, and I control all the wealth and power in the world!"
...
Returning to the city, he stirred up the world.
Unexpectedly!
He paid by mistake sincerely, and it was his former love who sent him to prison!
The hatred of your parents and the hatred of humiliating your sister will be repaid tenfold!
Those who refuse to obey will be killed without mercy!
Pretty good, not too verbose