There are death note movies and a recent drama which was nice too even if you know the plot already
Bloody Monday (similar to death note)
The Quiz Show 2 (similar to death note, also you don't have to watch the first season because they are like two seperate dramas, I only watched the quiz show two and it's amazing)
Maou (similar to death note, this is my absolute fav, just watch it, it's the best revenge drama out there)
The town where only I am missing (this is a movie, really nice)
Maybe something like N no Tame ni (really nice suspense drama)