I Can't Die Before the Novel Starts

An arranged marriage conducted through a sacred oath made in the name of God. In the middle of the wedding ceremony, memories of my past life came rushing back. I am a character who dies before this novel even truly begins. And it happens via an assassination—an event that isn't even detailed in the book! Why! Who? When? Where?! Who on earth do I have to ask to find out how I die?! --- If he ate it, then I win. Just as I was about to pull away with a triumphant smile, something touched the back of my head. “Mmph?!” Soon, I was pulled forward with force. Despite the fact that the medicine had already been swallowed, he began to rub every corner of my mouth, as if he intended to conv...