League of the Unkillable Demon King

What if you could become the best League of Legends player of all time, overnight? Chen Mu was a high-flying student who only cared about two things: scholarship money and his exam results. However, his life was upended one day when a system visited him and threatened to turn him into a vegetable unless he played League of Legends. The system promised to lift his family out of poverty as long as Chen Mu complied and played along with the missions assigned by the system. Little did he know, that the system was building him to become the Unkillable Demon King. How will Chen Mu balance his studies alongside becoming a gaming prodigy? Or will he be able to leverage his mathematical ingenuity to raise the bar?