I am the Duke of the Neighboring Kingdom - Mu Chengyun. During a battle for the throne, I was unfortunately poisoned to death by my biological brother. However, for the future of the Neighboring Kingdom, I cannot die, so I had to follow my own will and ask my afterlife to help me.
I, a senior high school student in the 21st century, was hit by a speeding van that afternoon. She said she was my previous life and wanted me to help her, and I agreed.
After traveling through time, I realized that it was completely different from modern times. What exactly would I encounter there?