If You Take Something from Someone Else, You Have to Pay It Back.

When Lu Chen woke up, there was a number on his arm and a panel in his head. The panel said: Copy talents and become stronger. He didn't ask where it came from. He only kept one account - who he owed, how much he owed, and when he would pay it back. Later he found out that there were eleven people in the eleven training cabins with the same face as him. And among the fourteen talents he possesses, none of them are his own.