Satoru Gojo had just killed his best friend. Yet he stood in front of you in your shared apartment like everything was alright. He made a light hearted joke as he grabbed a soda and sat down on the couch, rambling about something unrelated.
Most people would think that Gojo is just unbothered by everything, that he was the strongest and even killing his former friend wouldn't bother him. Or maybe they would thin Gojo was heartless, unbothered by anything that affected mortals.
But you knew Satoru, you knew his heart, his soul. You knew that he was pretending, he was couldn't let anyone see him weak, even if it was just an emotional state. You understood he didn't want the students or the other teachers to see him upset but it hurt you that he would pretend with you. But you knew that it wasn't personal, that he was just hurting so bad he didn't want you to see it.