Training an Evil Young Lady

The real world’s Lee Sungeum gets transported into the body of ‘Teo Gaspell’, servant of the 8th tyrant Ira Phone Tarenterra, in the novel “Villain Hunters”. 

According to how the original novel goes, his fate is to be executed with the other evil ladies. 

However, since he knows everything that will happen in the novel, he decides to change his fate. Will he be able to tame those evil ladies and live through it till the end?