After I Was Reborn, My Eldest Brother Married the Rich Heiress in My Place

My legitimate elder brother and I transmigrated back to half a month before the emperor found the real crown prince. My brother got to the fake crown prince first and revealed his identity. When he smugly taunted me, thinking he could take over my life from then on, I was actually grateful that he had helped me get rid of a huge problem. The fake crown prince was ruthless, and the dungeon beneath his palace was littered with bones and rotting flesh. If I hadn’t been lucky in my previous life, I would have ended up among them. My brother, on the other hand, was about to meet his death.