System, Please Let Me Go

This is a world where everyone cultivates immortality. And I, Lin Youfeng, am a carefree and good boy in this world. But after a serious illness, an extra system appeared in my body, and from then on my happy life was far away from me. This system seems not very serious yet. "Young man, this system will see if you are extremely talented and have extraordinary abilities. Are you interested in helping me save the world?" "... Can I refuse? Saving the world is too grand, and a mediocre person like me is powerless!" "I have already killed the first few who rejected this system." "... Um, do you agree?" "Yes, but they are also dead." What a devilish system this is! ! ! System, please let me go! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.