The Reborn Poisonous Concubine Fights for Your Favor

I always thought that people like me could only wait for one day to accidentally be killed by the enemy, or to be silenced by my superiors before the mistake happened. But since God has given me this chance to be reborn, let me feel what it feels like to be a happy idler. Competing for favor? Sorry, my sister is not very interested, but I can't help but there's nowhere to hide this damn charm!