Transmigrated As The Evil Concubine

Jungguk, a normal college boy, who says before processing, whose life revolves around food, sacrificing sleep at night then regretting in the morning but still repeating the cycle, study (barely), gossiping, chaos, dramas and novels. Has done PhD in cursing and regretting his life decisions but still doing them anyway, one peaceful day after his exams had ended he decided to binge read an famous novel 'The emperor's beloved consort' after reading the book for 15 hours and waiting to read even a single intresting word jg was disappointed to he used each and every single curse word he knew on the book, dropping a comment online to roast the author and the novel he called the fans of the novel brain rot lunatics and finally went to sleep peacefully
But looks like the universe couldn't bear his peace thus the next morning he woke up he was transmigrated inside the brainless novel and to his worst night as the side villain character who died miserably
at first jk thought he should get out of here somehow but then ...................... want to know what happened then read the story, my innocent armies(⁠◕⁠ᴗ⁠◕⁠✿⁠)