I Cultivated A Nemesis

I nurtured my greatest rival, the Demon King, who could reset time after each defeat. Yet no matter how often he revived, I kept defeating him. Eventually, he chose to restart his life differently—this time as my elder brother.

Determined to sabotage my growth, he used his powers to weaken me, aiming to render me powerless. But his plan backfired, leading to unforeseen consequences neither of us anticipated.