I Spread my Genes to Level Up in the Apocalypse

The world was decimated, ravaged by relentless war. Nuclear bombings led to a bizarre mutation that evolved into an entirely new element. Those unable to endure this transformation became undead beings, hovering between life and death. Only a small fraction of the population remains on Earth. Among these survivors, some have adapted to the mutation, awakening unique powers in the apocalypse, while others remain unaffected, living as ordinary people. Ray was just an average E-class awakener, but everything changed when he encountered a mysterious purple crystal. Through the crystal, a "system" activated within him, granting him the ability to grow stronger by spreading his genes. Whether necromancer, wizard, martial artist, or sorcerer—any skill became possible as long as he spread his genes. From that moment, Ray embarked on a path dedicated to spreading his genes "for the sake of humanity." #no ntr, yaoi or yuri