Mute (Attack on Titan)

Eren Jaeger used to be a fun energetic young male before his mother died...then everything changed. He became mute, able to speak but refusing to do so. He felt that he would never speak again until he met new comer to town Levi Rivaille.
(Rated R because I don't know where it will go in future. May change to PG-13 at some point :) ))