You have known Genji for a long time, even when he was in Blackwatch. You were one of the people that helped him recover, even more so mentally.. he trusted you more than he's probably willing to admit, in fact you're one of the people he trusts the most.. he finds peace in you.

It's been a shit day for him, so you were the first person he went to. He didn't have to say anything when he barged into your room- how he slams the door behind you before flopping onto your bed told you more then enough.. even more so with the unintelligible grumble he gave into the blanket.