Tokyo Ghoul is an anime television series by Studio Pierrot aired between July and September of 2014 followed by a second season that aired from January 8, 2015, to March 26, 2015. The executive producer is Gen Fukunaga. Tokyo Ghoul follows Ken Kaneki, a shy, bookish college student, who is instantly drawn to Rize Kamishiro, an avid reader like himself. However, Rize is not exactly who she seems, and this unfortunate meeting pushes Kaneki into the dark depths of the ghouls' inhuman world. In a twist of fate, Kaneki is saved by the enigmatic waitress Touka Kirishima, and thus begins his new, secret life as a half-ghoul/half-human who must find a way to integrate into both societies. Tokyo Ghoul is a completed series but it can still be viewed on Hulu.
Season 1 trailer: https://www.youtube.com/watch?v=vGuQeQsoRgU