This is one sick Japanese Horror Zombie movie. Adapted from a horror manga!
I am Hero is a Japanese horror manga by Kengo Hanazawa. A live action film adaptation directed by Shinsuke Sato and starring Yo Oizumi, Kasumi Arimura and Masami Nagasawa, premiered at the Sitges Film Festival on October 13, 2015, was released commercially on April 23, 2016.