"Though there are some benefits to my method that Anthea's method does not have," Rui realized with some thought. "Because a large number of cells are constantly dying with very few remaining, there is a constant survival of the fittest happening inside my body."
The cells in his body underwent evolution by natural selection; only the fittest survived the raging Gu, and only the fittest reproduced, making the next generation of cells ever so slightly stronger.
"It also makes my Gu stronger," he mused knowingly. "The more cells the Gu kills, the more Gu I gain."
There was a mutual symbiosis between his cancer and his Gu.
His Gu made his cells stronger.
His cells made his Gu stronger.
Even if he didn't train, he grew stronger.
Just by surviving.
With that in mind, he preferred his solution to Anthea's solution overall, even if Anthea's solution was more elegant and sophisticated.
His Gu was still far weaker than Asmodeous' Gu.
