My next life as a mistress, all routes lead to doom!

Hello, my name is rashta, just rashta, and I'm an 8-year-old slave belonging to the Lotteshu Estate.

One day while I was trying to steal some food from the kitchen without anyone noticing.(they barely feed us!) I accidentally tripped and hit my head real hard against the wall, which caused me to recover my past memories, at first I was excited when I realized that this world is an otome game from my previous life, but then I found out that I'm the running away slave that became the emperor's mistress! I would either be exiled, receive the death penalty, or sentenced to life in prison! I have no happy end?! why?! but no matter! I have to avoid the destruction end, and live a good life!