Not my System

Rex felt a sudden impulse to jump off a building. Only when he was already falling did he realize what he had just done.

"WTF!"
"I'm so f*cking stupid!!!"

Like that his life ended, ultimately this death was so so dumb that God gave him another chance at life, he was sent to a whole new world, But some complications happened and the system he was promised mistakenly binded to his smartphone.

Now Rex has to live in another world with a system that's not his own.

"F*ck it!"
"Let's just go with the flow!"