Starts With A Billion-dollar Freebie

A couple of shocking articles changed his life in a single night.
A 90-year Old Man died of an illness in his vicinity who was shockingly a Billionaire!
A student from his University went missing who was also known as the school belle!
"Ding! Binding Complete!"
His phone flashed and the article got updated, that Old Man was actually his landlord? And what's more shocking, the time of his death was right about now?!
Stunned, he made a run for his room saving the Old Man on time!
The Old Man suddenly got enlightened and transferred all of his assets to him, and... It turned out to be a Billion-dollar Freebie!!
....
It turned out, he had been bound by the System!
Anytime he interfered with the article or saving a life, he would receive even more unbelievable rewards!
He saved the beauties, slapped the mockers, and learnt of pure luxury but... was it really easy living like this? Soon he found out, that above all what he needed the most was... Strength!!