I'm Not the Protagonist, My Brother Is

"The world" is a mixed world. That being said, my brother is the "protagonist" and everyone around him has a system, which is too much. In short, this is a very complex world with a very broad understanding of human beings, and all kinds of expected and unreasonable creatures will appear. I am not the protagonist, just an "ordinary person" who devotes himself to research. By the side of my brother, the "darling of the world", while studying other people, I protected him from those systems that coveted luck. At the same time, I accidentally saved many people.