Quote (WMKjsp @ Jun 15 2014 01:21pm)
Fate/Zero is good on action, and its pretty serious. Hunter x Hunter is also great if you're looking for an anime with a serious plot. Fights are quick and intelligently done, however, and majority of the show is not fighting, but maneuvering to either avoid fights are get into the most advantageous position. If you like that, then definitely watch Hunter x Hunter (2011).
e/ Also read my above post, Shin Sekai Yori has some very real relationships, though I would not classify the anime as a romance.
Oh, already watched Fate/Zero and Shin Sekai Yori, Hunter X Hunter is too long for me to start right now