Hserver Hserver Episode 23 _Opening Episode 14 Episode 15 Episode 16 Episode 17 Episode 18 Episode 19 Episode 20 Episode 21 Episode 22 Episode 23 Episode 24 Episode 25 Watch Fate/Zero Second Season - Episode 23 Online Aired: Apr 8, 2012 to Jun 24, 2012 TV - (Finished Airing)