Cultivator
My favorite system of all time. So kind, so humane. It offers to sell perfect grade cultivation pills to the MC for 20 yuan each. It's happy whenever the MC does well. I have a complaint, though. Why are we hearing so much about that masochistic female classmate of his? Shouldn't the MC waifu his system instead? Anyway, outside of the system, the story was pretty mid. The plot was bad and the setting was meh. But the system was so amazing that I'm giving this five stars anyway. I'm not going to read more of it, though.