@Nalini Nanda I remember a Manhwa like this it's "Hwanyoung's misery" 
Comment by Athea on Nalini Nanda
1 Reply
@Athea but the best in this genre is Non Zero Sum bcz it's long n detailed compared to other books n manga which end quickly.Novel was detailed but not very deep though but it still kept me on edge until the end. if u r twisted like me n like yandere ML u can give it a try.