Sulu wasn't even going to try doing more than stepping just inside, since the door would close on him one way or another and the only way he could get this... done was to be on the inside.

Honestly it was almost more relieving to be treating this officially. Sulu had never been really good at personal relationships and going by friendly terms would just make it harder. "I understand, sir, I just - I needed to say it in person. I apologize from keeping this from you, Captain, I lost my head. It was a reckless maneuver and I shouldn't have proceeded as I did." Man, this was stressing him out. "I didn't think about the consequences."