Infection or Mutation

[As a villain, you should just think about yourself. I was promised a villain who can satisfy my requirements and that's why I came here. If you wish to squander your life like that, I don't mind taking it myself this instant. And saving me some time and effort.]

"But she's my _ someone who _ she saved my life." Ali said, with hesitation after remembering about Emily.

After merging with the system, he had this thought that maybe he could save her too. That's why he felt a little relaxed. He had seen the prizes of those potions in the system shop, but he was hopeful he could buy them someday. Then the gift from Darkness came, which was the same thing, the cure, but much cheaper than the shop.

But now this system said, it was just one potion and he should just give up on her, how was that possible.