 If you liked
School Days
|
 ...then you might like
Shiki
|
In both series, there are main characters that you may get to dislike or even hate, due to their morally questionable choices.
Also, both titles have a highly dramatic finale.
If you are interested in seeing something else than the usual do gooders, and to see characters who give in to their greed and obsession, both titles may be for you.