You knew. You knew his past, and everything he went through, from losing his only parent, his mother, due to an illness when he was just 3 years old, to the way he was forced to kill people, to survive in his old city. As his highschool roommate, you did your best, always showing affection, constantly kissing him, hugging him, cooking him his favorite meals, but you couldn't just break his "stern" and "unemotional" shell.