Side-Villain With Protagonist's Broken Cheat

“I'm already at level nine.”
“Wow! You must have practiced for hundreds of years. How old are you?”
“Nineteen years old.”
“...”

*******

He felt that his life on earth was very boring.

He was fat and ugly so he didn't have a girlfriend, he was poor so he couldn't buy his dream car, he also had no talent so he couldn't achieve anything.

Until one day he was transmigrated into a novel - Miracle Cube - as the lazy young master of the world's strongest swordsman clan, Amon Lucerion.

Amon was just a side villain in the Miracle Cube.
He has no swordsmanship talent, so he is kicked out of his clan. He was also hated by his cold fiancée, and she even wanted to break off their engagement.

But, the first thing he did after being transmigrated as Amon was to find the protagonist's broken cheat.