Tyrant's Tranquilizer
Ch 30 MC transmigrated into a character that died in the very first chap. The novel: the protag was MCs older sister, MC was kidnapped and killed by the emperor, protags screamed revenge and knighted by the emperor, working in the palace, protag discovered how MC was maltreated and abused. So protag led a rebellion and killed the emperor. But what should be a happy ending was the emperor was sealing inside his body was calamity. When the emperor died, extreme drought, the corpses caused contamination and spread a pandemic. MC then learned witch craft, she tried to run away to her family's estate but the emperor visited there, disguised as a bird, MC still grabbed the attention of the emperor. Emperor ML was there cause of the prediction of a witch that the one who will help ml in his calamity will be there, ml said the MCs scent calms him and was Inlove with bird MC. But ml couldn't control his calamity run to where there was no people, but MC saved him. Ml was then sticky with MC. And ML had MC work for him in calming the calamity
Scent of a Witch