Devil: I Become Stronger When I Drink. It Makes Sense, Right?

[Don't call me a devil fan] [System] [Kill decisively] [Have a knife] What is the beginning of the contract? What does it mean to have another golden finger? What does it mean to have an awakened system? Damn it, why do I feel like this protagonist is better at cheating than me? Moreover, what does it mean that I am the protagonist's brother-in-law? ··············· My name is Jiang Yu, and I am a time-traveler. I originally thought that I would be exactly the same as other time-travelers. After all, other time-travelers only have a golden finger, but I not only have a system, but also a golden finger. But, I am not the protagonist I am just a poor man who lost his parents. I hope there will be no demons in this world and there will be peace in this world. [New book, I hope you will give it a review, and I promise that I will not stop updating it easily]