Junior Sister Is the Lucky Star of the Group? Fight the Danger

Junior sister is the lucky star of the group? So, junior sister, please accept this "top opportunity" of a narrow escape! In the original novel, my junior sister became a lucky star by sucking my blood. In this life, I have spent all my wealth just to "turn it into physical waste" and I will never be a big grievance. The teacher forced me to ward off disasters, and I gasped and vomited three liters of blood every time I took a step; Junior sister wanted a chance, so I cut off the passers-by in advance. When the demon king came to the world, my junior sister was so frightened that I could not help but sigh. I lifted the branch and opened the gate of heaven with a sword.