Cronus' system: Against the gods

Ding
{System notification} The God of War, Ares, has been defeated
{+one million exp points}

"What the heck! I just took down a god and I only get a million experience points? Cronus, you cheap ancient relic! I’ll make you pay for this!" Rex yelled.
"Indeed, you have only defeated the god of minor battles, Ares. Please do not speak of billions in rewards until you can defeat Zeus, Poseidon, or Hades. Until then, enjoy your modest gains, mortal!"
"Talk normally!" Rex screamed.
"You've only defeated the god of brawls, Ares. When you manage to take down Zeus, Poseidon, or Hades, then we can discuss real rewards. Until then, enjoy your pocket change!"

"Okay, now I even hate it when you speak normally!" Rex facepalmed.
**************
Pandora's box has been opened! Woe unto humans!! The entertainment of the gods has just begun!!!
Years after the Titans were defeated by the Olympians, humanity began to awaken abilities that made them perform feats previously seen only in superhero movies. Yet, "evil must accompany good," as monsters also started emerging on Earth.
Amidst all of this, an orphan boy named Rex failed to awaken any abilities. As if this wasn’t enough, a pitiful end soon followed him. But it seemed as if fate hadn’t forsaken him yet, as the very depths began calling for him,
***Young one, You have inherited my will***
But great power comes at a great cost.