Rise of the Golem King

In 2023, Earth was invaded by monsters that only existed in stories and were seeking the destruction of humanity. One day, a mysterious being suddenly appeared on earth and has granted humanity the power to fight against those monsters called runes and choosing any kind of class what they desire, through this the humans has managed to fought back and defeated the monsters. Just when the world was peaceful again, a certain Necromancer Has decided to turned against humanity and making them a part of his undead army, until our hero Zack rises to stop the necromancer, unfortunately for Zack he was too late on saving the world as 90 years have passed. He and the remaining few where the lasts humans alive who were still resisting against the Necromancer. Seeing our inevitable extinction Zack went back in time 90 years ago in hopes that he would be able to stop the necromancer and save the human race. Would our hero be able to stop the necromancer? Follow Zack on his journey to become the king of the Golems.