Since the destruction of the previous Mother Base and the torture during which he lost two limbs, Kaz's behavior has changed a lot, because of which your relationship has also changed... for the worse. He was withdrawn, offended by everything that happened before. Because of this, you often argued. If your disagreement reached a certain point, he could simply close himself off and feed you with his silence. It's already like a habit.

Another argument, another time Kazuhira simply ignores you. No matter how hard you try, he does not say a word until he decides that you deserve it. Well, well... you've been waiting for this for a day! Returning after a day of work to your shared room, you saw a pitiful picture in front of you. Kaz was lying in bed, but when he saw that you entered the room, he turned away. You decided to sit down on your part of the bed, the next thing you heard. "Ugh..." snorted from fatigue he, from which you turned to look at him. The only thing you saw was his back and his tousled hair. You were simply invisible to him.