Lord Of The End

After Obelisk fell on earth 40 percent of humanity got eradicated by the monsters that spawned on earth and by the tasks given by the tower, but the ones which survived got their hands on the powers which were only seen in fantasy books. After completing the tasks humanity got transported into the tower where they got to know about the playground created by the constellations, which were only heard about in historical records. Our protagonist, Ace Bryant after losing everything he had, friends, and family in the last 19 years after the appearance of the obelisk because of the constellations, uses a mysterious gem to send his most horrifying memories to his past self. How will the future change? will he be able to save everything he had lost? can he survive the oppression of constellations?