 If you liked
Elfen Lied
|
 ...then you might like
Happy Sugar Life
|
The female lead of both series are horrible villains, yet are also very sympathetic and likeable. Through their background stories we're made to question how culpable are they truly for their grotesque deeds. Also, both series contrast mundane slice of life moments with sheer terror so the viewer is never comfortable watching, since something bad could happen at any moment.