Synopsis: Even if you can escape with reincarnation, my brother?

Five years have gone by since I finished high school, where my younger sister held me captive under her oppressive regime. Unfortunately, my attempt to escape led to a fatal outcome when a truck hit and killed me. I believed that death would release me from her dominance, but we've both been reborn in the same realm. My goal is to steer clear of her dictatorship and enjoy my freedom in a different area. Fortunately, a divine force has bestowed upon me the ultimate tool and position.